A truck of mass 7 tonnes was moving with a velocity of 145 km/hr. The brakes were applied to bring the truck to 5 km/hr in 450 m. Determine the uniform force exerted by the brakes. Also find the velocity it will reach if the same force is applied in the same direction for 9.5 seconds and also find the distance travelled in this period.    The uniform force exerted by the brakes in N is The velocity it will reach if the same force is applied in the same direction for 9.5 seconds in m/s is The distance travelled if the same force is applied in the same direction in this period in m is

Q: A girl weighing 45kg is standing on the floor, exerting a downward force of 200N on the floor. The…

A: mass of the girl = 45 kg  g= 10 m /s2 mg = 450 N BUT  girl applied only 200 N force . means floor is…

Q: A 500-lb object is released from rest 500 ft above the ground and allowed to fall under the…

A:

Q: Find the law of motion of a body acted upon by a constant force F if at time  the body is at rest at…

A: In science, Newton's first law is also known as the law of inertia. The first law says that an…

Q: A 2200 kg car, initially travelling at 80.0 km/h West, slams on the brakes and it comes to rest over…

A:

Q: A body at rest or in uniform motion is one that undergoes acceleration is in equilibrium O is acted…

A: Given : A body is in rest or uniform motion .

Q: A 320-lb object is released from rest 500 ft above the ground and allowed to fall under the…

A:

Q: Suppose an object is accelerated by a force of 100 N. Suddenly a second force of 100 N in the…

A: The option (c) is the correct answer.

Q: An object of mass m is initially at rest. After a force of magnitude F acts on it for a time T, the…

A:

Q: What magnitude net force is required to accelerate a 1200-kg car uniformly from 0 m/s to 27.0 m/s in…

A: Given quantities: mass of the car (m) = 1200 kg initial velocity (u) = 0 m/s final velocity (v) = 27…

Q: -1.2m/s?, what is the net force acting on the vehicle?

A: negative acceleration means the speed reduces with time. Hence force will be negative means in…

Q: The acceleration of a particle is directly proportional to the applied force acting on the particle.…

A:

Q: A crate at rest having a weight of 1.60KN was dragged with a constant force of 0.75KN at an angle of…

A:

Q: Accident analysis has led experts to believe that Princess Diana experienced a deceleration rate of…

A: At the time of her accident, Diana experienced a deceleration rate of 700 m/s2. This deceleration…

Q: A car weighs 13200.0 N is initially moving at a speed of 41km/hr when the brakes are applied and the…

A: Given- weight of car W= 13200 N initial speed of car , u = 41 km/h =41 x (5/18 ) m/s =11.39 m/s…

Q: After falling from rest from a height of 25 m, a 0.60-kg ball rebounds upward, reaching a height of…

A:

Q: A 2 lb hammer travelling at a speed of 15 ft/s strikes anail and drives it 0.75 inor inches into a…

A: Since the hammer is moving it possesses kinetic energy which is given as k=0.5×m×v2---(A), So in…

Q: A girl weighing 45kg is standing on the floor, exerting a downward force of 200N on the floor. The…

A: Given, Girl weight-45 kg Downward force=200N The force exerted by floor on the girl is equal to…

Q: the net external force on the 24-kg mower isstated to be 51 N. If the force of friction opposing the…

A: Mower mass, m = 24 kg Net external force on mower, Fnet = 51 N Force of friction, f = 24 N (always…

Q: Calculate the force acting on a particle. Mass 100 kg moving in straight line

A:

Q: Superman must stop a 120-km/h train in 200 m to keep it from hitting a stalled car on the tracks. If…

A: Given: Train speed = 120 km/h or 33.33 m/s Distance in which superman has to stop the train = 200 m…

Q: A 4.0 g bullet exits the muzzle of a rifle with a velocity of 338 m / s. What force (assumed…

A: Given data, Mass of bullet m = 4. 0 g = 4 x 10-3 kg Initial velocity of the bullet vi = 0 Final…

Q: A body of mass 2 slugs is acted on by the downward force of gravity and a horizontal force of 130…

A: Let the body’s mass is denoted by m and the horizontal force is denoted by F. Evaluate the…

Q: A truck of mass 7 tonnes was moving with a velocity of 110 km/hr. The brakes were applied to bring…

A: The velocity of an object is defined as the rate of change of displacement with respect to time…

Q: What net external force is exerted on a 1500-kg artillery shell fired from a battleship if the shell…

A: The mass of the artillery shell is, m=1500 kg   The acceleration of the artillery shell is,…

Q: A crate of mass 50 kg slides on a horizontal floor under the action of an applied horizontal force…

A: Mass of crate: m = 50 kg Horizontal force: F = 200 N Frictional force: f = 120 N

Q: Show that the acceleration of any object down an incline where friction behaves simply (that is,…

A: The magnitude of the friction force is given by the expression,

Q: acceleration of a block if the incline is frictionless b. find the acceleration of the block i

A: Given:- The mass of the block m = 5.3 kg  The angle of the inclined plane is 22 degree  The force F…

Q: The complete specification of the action of a force must include: The magnitude and direction of the…

A: Force is a vector quantity . Force depends on direction and magnitude both

Q: From the original force F, if the mass of the object is doubled and the acceleration is halved, what…

A:

Q: A 800-lb object is released from rest 600 ft above the ground and allowed to fall under the…

A: Given, Object mass 800 lb and drops from 600 ft above the ground

Q: A body weighing2 kg was acted upon by a horizontal force of 3 N. What speed will the body acquire in…

A: The physical quantities can be of two types- scalar and vector. The scalar quantities are the…

Q: Two forces, F and F, are acting towards opposite directions. The resultant force, F, has the same…

A:

Q: A 200-b object is released from rest 600 ft above the ground and allowed to fall under the influence…

A:

Q: What magnitude net force is requred to accelerate to a 1200-kg car uniformly from 0 m/s to 27.0 m/s…

A: The net force required to accelerate a car of mass 1200 kg is calculated using following…

Q: A net force is acting on a body; therefore the body is a) being accelerated  b) losing mass c)…

A: According to Newton's 2nd law, acceleration of a body is equal to net force divided by mass. Hence…

Q: In a trial, a dog generated an instantaneous ground reaction force that was 1.7 times the dog’s…

A:

Q: An airplane of 5,000kg, traveling at 30m/s West slows down to stop in 450 m. What is the magnitude…

A: Given : mass of airplane, m = 5000 kg Initial Velocity u = 30 m/s                      v = 0 m/s…

Q: If a 0.50-kg block initially at rest on a frictionless, horizontal surface is acted upon by a force…

A:

Q: What net external force is exerted on a 1500-kg artillery shell fired from a battleship if the shell…

A: Given data:  Mass (m) = 1500 kg Acceleration (a) = 2.00 × 104 m/s

Q: A 800-lb object is released from rest 600 ft above the ground and allowed to fall under the…

A:

Q: An 80.0 N horizontal force acts on an object with a mass of 4.00kg and is initially at rest. Find…

A: According to Newton's 2nd law, the force applied on a body is equals to mass of body multiplied with…

Q: If the net force on an object is zero,

A: The net force on an object is zero

Q: A train of mass 1000 tons moves in the latitude 60° north. Find the magnitude and direction of the…

A:

Q: Second Law of Newton states that when there is a net force acting on a body, the body would…

A: Given Second Law of Newton states that when there is a net force acting on a body, the body would…

Q: After falling from rest from a height of 25 m, a 0.30-kg ball rebounds upward, reaching a height of…

A: Given information:The mass of the ball (m) = 0.3 kgHeight from which it falls (h1) = 25 mHeight to…

Q: A car of mass 1200 kg is accelerated from rest to a speed of 72km/hr in 40 seconds . Calculate the…

A: Given: The mass of the car is 1200 kg.             The final speed is 72 km/hr.              The…

Q: Describe a situation in which one system exerts a force on another and, as a consequence,…

A: Newton's third law says for every action there is an equal and opposite reaction .But action and…

Q: A car of mass 230 kg moving at a speed of 30 km/hr is stopped by applying brake in 15 sec. Calculate…

A: The car is stopped in 15 sec. It means the final velocity of the car is zero. Therefore, applied…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: