the KE of a 1 000 kg . Calculate car travelling at 60 km/h.

Q: How fast would a 89 kgkg person have to run to have a kinetic energy equal to the amount of energy…

A:

Q: A cart which has a mass of 20 kilograms slides down a frictionless slope of a hill. If the cart…

A: Given data:  Mass (m) = 20 kg Initial velocity (Vi) = 0 m/s Final velocity (Vf) = 15 m/s…

Q: 7. The face of a dam adjacent to the water is vertical, and its shape is in the form of an isosceles…

A:

Q: Calculate the work done by a force of 70 N in lifting a load of 5kg to a height of 10m (g = 10ms2)

A: Work done is calculated as:   Work = Force x Displacement W = F.d…

Q: A 5kg medicine ball is thrown upward at 8 m/s. When it is caught, a force is applied over a distance…

A: Given Data: The mass of the ball is: m=5 kg The velocity of the ball is: v=8 m/s The distance to…

Q: What would be the power output (in-hp) of a 1750kg car if it can acend to the top of a 285m high…

A: The expression of work- energy theorem,

Q: A 1,000 kg sports car accelerates from 0 to 30 m/s in 13 s.  What is the average power of the…

A: Mass of the car,(m)=1000 kg ----(1) [Given] The initial velocity of the car,(vi)=0 m/sec ----(2)…

Q: A car weighing 12 k N has speed of 20 ms- 1. Find its kinetic energy.

A: Given data:  Weight of car (W) = 12 kN = 12000 N Speed (v) = 20 m/s Required: Kinetic energy (KE)

Q: How much time does it take to lift 600 kg

A: Given; How much time does it take to lift 600 kg to a height of 60 m ? So,  Data is given as;  P=55…

Q: Given that the PE at B is 25.0 kJ and KE at B is 80.0 kJ. What is the KE at A if the height at A is…

A:

Q: How much work has to be done to accelerate 1320kg car from 115km/h to 130km/h ?

A: Given data:  Mass of car (m) = 1320 kg Initial velocity of car (Vi) = 115 km/h Final velocity of car…

Q: How much work is required to increase the kinetic energy of a motor scooter by 4000 J?

A: The objective of the question is to find out the amount of work required to increase the kinetic…

Q: How long will it take a 742-kg car with a useful power output of 43.2 hp (1 hp equals 746 W) to…

A: Mass of car (M) = 742 kg  Output power of car = 43.2 hp  Power (P) = 43.2(746W) = 32227.2 W  Speed…

Q: A spring is 37 cm long. It is stretched by a force of 12 N until it is 51 cm long. How much energy…

A:

Q: An engine develops 10 kW of power. How much time will it take to lift a mass of 250 kg to a height…

A:

Q: A 1500-W motor powers a hoist used to lift cars at a service station how much time would it take to…

A: Given data: Power (P) = 1500 Watt Mass (m) = 2500 kg Height (h) = 3 m Required: Time taken to raise…

Q: kilowatt (kWh)

A:

Q: A vehicle of 50 quintal climbs up a hill of 10 m. The potential energy gained by it is (take g = 10…

A: Calculating the potential energy by formula P = mgh

Q: A spring has a natural length of 8 in. If a force of 20 lb stretches the spring 1/2 in., find the…

A:

Q: how much energy needed to kick a football of mass 500 gm with the velocity 72 km/hr

A: Given,        mass of the football = 500g =0.5 kg        velocity of foot ball = 72 km/hr…

Q: What is the current total mechanical energy of a 70-kg skydiver whose speed is 62 m/s at an altitude…

A: The kinetic energy of a body of mass m and speed v is given by, K = 12mv2 The potential energy for…

Q: When a body possessed a total KE of 69J, and is moving at a speed of 66m/s, find the weight of the…

A: Kinetic energy is the motion energy, An object that has motion - whether it is perpendicular or…

Q: The rate of doing work is known as

A: In physics, the rate of doing work is known as Power. It is equivalent to an amount of energy…

Q: A person pushes a stopped car of mass 400 kg with a force of 200 N until the car its velocity is 5…

A:

Q: How much work would have to be done to bring a 1030-kg automobile traveling at 86 km/h to a stop?

A:

Q: An object has its velecity increased by a factor of two, the kinetic energy is increased by a factor…

A: Let the mass of the object = m Let the initial velocity = v

Q: If a cart is initially travelling at 3.5 m/s, and has a mass of 200g, what is it's kinetic energy…

A: See below

Q: Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 km/h?

A: m = 1500 kg  v = 60 km/h = (60 *518)m/sec v = 16.66 m/sec

Q: What is, in MW, the power generated by a turbine that has a power coefficient equal to 0.24 when the…

A:

Q: As a block of mass 7 kilograms drops from the edge of a 40-meter-high cliff it experiences a loss of…

A: Given: The mass of the block is 7 kg. The height of the cliff is 40 m. The loss of energy due to air…

Q: What velocity does a 1 kg object have when its kinetic energy is 1 J?

A: Given : Mass (m) = 1 kg Kinetic energy (K) = 1 J

Q: A 1kg cannon ball is fired horizontally with an initial velocity of 5m/s. If the cannon was atop a…

A: Given: Mass of a canon m = 1 kg. Velocity of firing canon v = 5 m/s. height of canon h = 20 m.

Q: How much work is done on a 50kg sack of rice if its carried along a 10m long road?

A: Given value--- mass = 50 kg . displacement = 10 m We have to find--- work done?

Q: What is the kinetic energy of a 30 kg object travelling at 20 m/s? O 12 kJ O.12 kJ O 120 kJ O 12 kJ

A: Given data: Mass (m) = 30 kg Velocity (v) = 20 m/s Required: Kinetic energy (KE)

Q: Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 70 km/h ?

A: Given data:  Mass (m) = 1500 kg Initial velocity (Vi) = 70 km/h Final velocity (Vf) = 0  Required:…

Q: A car requires 170kiloJoules to accelerate from 23m/s to 28m/s. If this happens over 2 seconds, what…

A: Power is defined as the rate of doing work. Power is a scalar quantity and the SI unit of power is…

Q: How much power is developed by an airplane that cruises at 300 m/s when the thrust of its engine is…

A: Power=work (W)time (t)            =force (F)·displacement (S)time (t)            =force…

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest.