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A: Given data The mass of a subway car and passengers is: m = 34500 kg The acceleration of the car is:…
Q: What is acceleration of mass=1/6kg
A: acceleration is defined as rate of change of velocity per unit time. Its unit is meter per second…
Q: A 300 lb car travelling with a speed of 30 mph, strikes an obstruction and is brought to rest in…
A: Given:Car weight 300 lbCar speed is 30 mphCar came to rest in 0.10 secTo Find:Average force on car ?
Q: a car accelerates at 3 m/s2 towards a brick wall. if the car exerts a 5,000 N force on the wall,…
A:
Q: what force is needed to give a 8800.0kg truck an acceleration of 8.5 m/s2 over a level road?
A: Given,Mass of the truck, m=8800kgAcceleration of the truck, a=8.5m/s2
Q: A truck covers 40.0 m in 8.95 s while smoothly slowing down to final speed of 1.60 m/s.
A:
Q: A horse is pulling a 95.1 kg crate with a force of 450 N at a . If the coefficient of kinetic…
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Q: A force of 1060 N is needed to bring a car moving at 20.1 m/s to a halt in 18.7 s. What is the…
A: force = 1060 N u = 20.1 m/st = 18.7 s
Q: A golf ball with a mass of 0.046 kg is accelerated from rest to 67 m/s in 0.0063 seconds. What force…
A: mass (m) = 0.046 kg initial velocity (u) = 0 msFinal velocity (v) = 67 mstime (t) = 0.0063 seconds…
Q: What is the mometum of 2000 kg car traveling at 35 m/s?
A: The momentum of an car is calculated by using the formula p=mv , where m=2000 kg is the mass of the…
Q: What is the force of friction between a box that weighs 87 N and the ground has a coefficient of…
A: Given: Box weighs, F=mg=87 N Static friction coefficient, μ=0.51
Q: What force would be needed to produce an acceleration of 2 m/s² in a ball of mass 4 kg ?
A: Acceleration (a) = 2m/s2 mass (m) = 4 kg Force required (f) = ?
Q: A 1,245.04 kg car at a stop light is rear-ended by a 3,379.96 kg car traveling 70.56 km/h what will…
A: Given that: Mass of car A = 1245.04 kg Mass of car B =3379.96 kg Speed of car b = 70.56 km/h=19.6…
Q: A textbook with a mass of 2.18 kg is pulled across a table with a horizontal force of 5.5 N [E]. If…
A: Given data: Mass (m) = 2.18 kg Horizontal force (F) = 5.5 N, toward East Coefficient of friction (μ)…
Q: To be able to accelerate a 2500 kg truck from 10m/s to 20 m/s in 2.0 s, force should be
A: Mass of the truck m=2500 kg Initial velocity of the truck u=10 m/s Final velocity of the truck v=20…
Q: What force would be needed to produce an acceleration of 5.2 r
A:
Q: What is the acceleration on a 45.7kg object that is maintaining a constant speed of 1.2m/s?
A:
Q: How large a net force is required to accelerate a 1,703-kg SUV from rest to a speed of 12.9 m/s in a…
A: Net Force required....Fnet= 624.149 Newtons
Q: If a car of mass 785 kilograms accelerates a a rate of 3.25 m/s2, what is the net force on the car?
A:
Q: A 747 airliner reaches its takeoff speed of 152 mi/h in 35.5 s.
A: The expression for find average acceleration is aavg=v-ut
Q: what is the weight of a car with a mass of 1500kg
A: W=mg g is the gravittaional acceleration
Q: What is the mass of an object if a force of 12 Newtons gives it an acceleration of 4 m/s2 ?
A: Given; F=12 N a =4 m/s2
Q: What force is holding the 2000 kg mass up?
A:
Q: What is the mass of the object . When the weight of the object is 1200 N ?
A: Given Weight of the object is 1200 N Mass of object is ,M =?
Q: What is the weight of a 55 kg man?
A: Given data mass of man (m) = 55 kg we know that weight (W) = mass (m) x acceleration due to gravity…
Q: A 1500-kg car has a velocity of 25.0 m/s. If it is brought to a stop in 15.0s, what was the…
A: Given Mass of car m=1500kg Initial velocity u=25m/s Final velocity v=0m/s Time to reach final…
Q: If the applied force on an object is 30 N and accelerates it at 3 m/s2, what is the mass of the…
A: According to newton's second law force on the object is equal to multiplication of mass and…
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A:
Q: A car initially traveling at 14.8 miles per hour comes to rest in 4.9 s. What was its acceleration…
A: Initial velocity of car (u) = 14.8 miles per hour Final velocity (v) = 0 mstime taken (t) = 4.9…
Q: What is the force if the mass of an object is 465 kg and its acceleration is 22 m / s to the second…
A: The given values are,
Q: If your mass is 60 kilograms, what is your acceleration?
A: According to Newton’s second law the force acting on an object is
Q: What force would be needed to produce an acceleration of 4 m/s in a ball of mass 6 Kg
A: Given data :- Mass of the ball m = 6 kg Acceleration produced a = 4 m/s2
Q: What force is required to accelerate an object having a mass of 6 kg at 9 m/s?
A: Introduction : In this question we are provided it value of mass and acceleration . With these data…
Q: A 3,150-kg truck accelerates from 4.2 m/s to 7.8 m/s in 14 s. Which describes the average force…
A: acceleration is the rate of change in velocity
Q: The mass of a large car is 1000 kg. How much force would be required to accelerate the car at a rate…
A: Mass = 1000 Kg Acceleration = 3 m/s2 To find - Force required to accelerate
Q: A boy having a mass of 75 kg holds in his hands a bag of flour weighing 40 N. What is the normal…
A: Write the given values with suitable variables. m=75 kgWb=40 N Here, m denotes the mass of a boy and…
Q: A bowling ball has a mass of 7.0 kg and a velocity of 5.5 m/s. What is the force needed to stop the…
A: Given data: Mass (m) = 7.0 kg Initial velocity (Vi) = 5.5 m/s Final velocity (Vf) = 0 m/s Time (t)…
Q: A 1200 kg car is travelling at 30 m/s and hits a wall. If the wall applies 48,000 N of force to the…
A: The answer is below
Q: A car of mass 6000 kg moving at 40 m/s is suddenly brought to a stop when a deer crosses the road.…
A:
Q: How much time does it take to lift 500 kg
A: Given; height,h=50 mDevelops power,P=65 kWTime taken to lift the weight to a height of 50 m is ?
Q: A 1750 kg truck traveling with the velocity of 18 m/s due east collided with a tree. If the force…
A: Mass of the truck, Initial speed of the truck, Force exerted on the truck, Final speed of the…
Q: A bicycle has a momentum of 45.00 kg·m/s and a velocity of 1.5 m/s. What is the bicycle’s mass?
A: Momentum of the bicycle is 45.00 kg.m/s Velocity of the bicycle is 1.5 m/s We know , momentum…
Q: A car of mass 1,323 kg accelerates from rest to 21.8 m/s in 5.31 s. How much force was required to…
A: From Newton's 2nd law of motion, we know that, if an object has mass m and acceleration a then the…
Q: If a trolley starts from rest with an acceleration of 2 m/s, the velocity of the body after 4 s…
A:
Q: A car with a mass of 1200 kg moves at 17 m/s. What force is needed to bring the car to a halt in 10…
A: m=1200 kg. u=17 m/s. t=10s.
Q: A 20kg box is lifted 350m above the ground in 5 minutes.
A:
Q: If a truck engine exerts a force of 6000 N and has an acceleration 1.5m/s/s, what is the mass of the…
A: Given data The force exerted by the truck is: F = 6000 N The acceleration of the truck is: a = 1.5…
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- (a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a speed of 15.0 m/s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?. In the annual Empire State Building race, contestants run up 1,575 steps to a height of 1,050 ft. In 2003, Australian Paul Crake completed the race in a record time of 9 min and 33 S, Mr., Crake weighed 143 lb (65 kg) , (a) How much work did Mr., Crake do in reaching the top of the building? (b) What was his average power output (in ft-lb/s and in hp)?(a) What is the average useful power output of a person who does 6.00106J of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
- A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people ‘would it take to nm a 4.O0-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.A 100 — kg man is skiing across level ground at a speed of 8.0 m/s when he comes to the small slope 1.8 m higher than ground level shown in the following figure. (a) If the skier coasts up the bill, what is his speed when he reaches the top plateau? Assume friction between the snow and skis is negligible. (b) What is his speed when he reaches the upper level if an 80 — N frictional force acts on the skis?
- A sled of mass 70 kg starts from rest and slides down a 10 incline 80 m long. It then travels for 20 m horizontally before starting back up an 8° incline. It travels 80 m along this incline before coming to rest. What is the magnitude of the net work done on the sled by friction?“ E=K+Uconstant is a special case of the work energy theorem.” Discuss this statement.Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.0° slope at constant speed, as shown in Figure 7.37. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 30.0 m along the hill? (b) How much work is done by the rope on the sled in this distance? (c) What is the work done by the gravitational force on the sled? (d) What is the total work done?
- Integrated Concepts (a) What force must be supplied by an elevator cable to produce an acceleration of 0.800 m/s2 against a 200-N frictional force, if the mass of the loaded elevator is 1500 kg? (b) How much work is done by the cable in lifting the elevator 20.0 m? (c) What is the final speed of the elevator if it starts from rest? (d) How much work went into thermal energy?Integrated Concepts (a) Calculate the force the woman in Figure 7.46 exerts to do a push-up at constant speed, taking all data to be known to three digits. (b) How much work does she do if her center of mass rises 0.240 m? (c) What is her useful power output if she does 25 push-ups in 1 min? (Should work done lowering her body be included? See the discussion of useful work in Work, Energy, and Power in Humans. Figure 7.46 Forces involved in doing push-ups. The woman's weight acts as a force exerted downward on her center of gravity (CG).Physics Review A team of huskies performs 7 440 J of work on a loaded sled of mass 124 kg, drawing it from rest up a 4.60-m high snow-covered rise while the sled loses 1 520 J due to friction, (a) What is the net work done on the sled by the huskies and friction? (b) What is the change in the sleds potential energy? (c) What is the speed of the sled at the top of the rise? (See Section 5.5.)