A 0.3-kg ball is thrown with a speed of 10.3 m/s at an angle 32.5 degrees. How high does it go? To solve this problem, use conservation of energy and ignore air resistance.

A roller coaster starts with a speed of 4.1 m/s at a point 51 m above the bottom of a dip. Neglecting friction, what wil be the speed of the roller coaster at the top of the next slope, which is 30 m above the bottom of the dip? Answer: m/s

You reach out of a window 15 m above the ground and toss a ball straight up with a speed of 10 m/s. Neglecting air resistance, what is (a) the ball’s maximum height above the ground, and (b) the ball’s speed when it hits the ground? Solve both parts of this problem using kinematics as well as energy conservation, and show that you get the same answers.

A box of 9kg is released from rest on a rough inclined plane and slides to the bottom. The plane is inclined at a 230 angle to the horizontal and it is 5.1 m high. The coefficient of kinetic friction between the box and the plane is 0.1. Use conservation of energy to determine the speed of the block as it reaches the bottom.

Please use the information in the picture to answer the question: How fast must it have leapt from the water to reach a such a great height and speed. If you stand at the bow where you can reach up to a height of 3m above the water. You can only catch a fish if it is traveling under 8.5m/s when it reaches you. Will you be able to catch the fish? Find the speed of the fish at your location. Hint: use energy conservation.

a baseball outfielder throws a baseball of mass 0.15 kg at a speed of 40 m/s and an initial angle of 30 degrees. What is the kinetic energy of the baseball at the highest point of the trajectory? Ignore air friction.

A 145 kg crate slides down a ramp, starting from rest. The ramp is inclined at an angle of 20.6 degrees with respect to the horizontal and has a height of 1.74 m. The crate is placed on frictionless casters so that it slides down the ramp without friction. What is the final speed of the crate (in m/s) just as it reaches the bottom of the ramp? Use g = 9.81 m/s?.

A motorist driving a 1332-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.00 s. Ignoring friction and air resistance, determine the average mechanical power in watts the engine must supply during this time interval.

A 59 kg skier leaves the end of a ski-jump ramp with a velocity of 26 m/s directed 20° above the horizontal. Suppose that as a result of air drag the skier returns to the ground with a speed of 17 m/s, landing 11 m vertically below the end of the ramp. From the launch to the return to the ground, by how much is the mechanical energy of the skier-Earth system reduced because of air drag?

A 50.6 g golf ball is driven from the tee with an initial speed of 55.4 m/s and roses to a height of 23.8 m (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) what is it speed when it is 5.63 m below its highest point ?