A 45 kg student runs with a speed of 2.0 m/s off a horizontal ledge that is 5.0 above a swimming pool. Calculate the vertical speed of the student when she hits the water. ... Energy...

A 45 kg student runs with a speed of 2.0 m/s off a horizontal ledge that is 5.0 above a swimming pool. Calculate the vertical speed of the student when she hits the water. ... Energy...

In an attempt for a physics teacher to explain the conservation of energy to a student, the teacher goes down a 6.0 m high sliding board. At the bottom, he only travels 7.0 m/s. If the mass of the...

Two charges q1 = −3.20 nC and q2 = +8.15 nC are at a distance of 1.28 µm from each other. q1 is fixed at its location while q2 is released from rest. (a) What is the kinetic energy of...

A small car of mass 500kg is travelling at 120km/h when it hits stationary truck (of 1.5 tonne mass) head on. The small car rebounds and travels in the opposite direction at 40km/h. The collision...

A small ball has a mass of 5.0 x 10-8 kg and a charge of 0.0 x 10-5 C. It enters a box with an initial speed of 1.2 x 104 m/s. The point where the charge leaves the box is at a voltage 350 kV higher...

A 1.00-kg block is pushed along a rough horizontal floor with a horizontal force of 5.00 N for a distance of 5.00 m. If the block is moving at a constant velocity of 4.00 m/s, find... The...

A girl on a playground swing starts from rest at an angle θ=34.2 from the vertical. The chains have length L=6.8 meters. Find her speed as she passes through the bottom of the swing. Assume no pushing,...

A wagon moving at 25 km/h has a kinetic energy of 6000 kg•km2/h2. What is the mass of the wagon

Photon is incident have frequency 1×?10?^14 sec^(-1). Threshold frequency of metal is 5 × ?10?^13 sec^(-1).find kinetic energy of electron 2.electron in hydrogen atom jump from excited state n...

Postulates of the Kinetic-Molecular Theory of Gases: 1. Gas particles are extremely small and have relatively large distances between them. 2. Gas particles act independently of...

Dart hits wheel. In terms of m, M, v0, and R (of wheel), find: A) angular speed of wheel B) ratios of initial and final kinetic energies

Ball A of mass 5 kilograms moving at 20 meters per second collides with ball B of unknown mass moving at 10 meters per second in the same direction. A car traveling at 20 m/s has 1,000...

A diagram shows a moving 5.00-kilogram cart at the foot of a hill 10.0 meters high. What is the minimum kinetic energy needed for the cart to move from its current position to reach the top of the...

Calculate the rest energy and the kinetic energy of: a) A 100g ball travelling with the speed of 100m/s b) An electron travelling at a speed of 0.999c. Which one has greater...

Question: As the speed of a bicycle moving along a level horizontal surface changes from 2 m/s to 4 m/s, the magnitude of the bicycle's: Multiple Choice: a. total energy remains...

1. Compared to a marble released from a height of .5 m, a marble released from a height of 1 m has: a) More SPE at the top of the fall b) More KE at the top of the fall c) More...

You slide a block with a mass of m down an incline plane with a height of h that has a length of L. If there is a kinetic friction f acting on the object as it slides down the incline then...

A 4.25-kg block is sent up a ramp inclined at an angle θ = 31.5° from the horizontal. It is given an initial velocity v0 = 15.0 m/s up the ramp. Between the block and the ramp, the coefficient of...

A cart with a mass of M is traveling at a velocity of V. a) What happens to the cart's kinetic energy when the mass of the cart triples? b) What happens to the cart's kinetic energy...

Two balls collide in a totally inelastic collision. The first ball has twice the mass of the second. The first ball has velocity v (to the right), and the second has velocity −v (to the left). What...