<p> Pre AP Energy Test </p><p>1) A stationary hockey puck has a mass of 0.15 kg. A hockey player uses her stick to apply a 3.9 N force over a distance of 0.76 m. How much work does this force do on the puck?</p><p>2) What is the mass of an object moving at a speed of 9 m/s with a kinetic energy of 910 J?</p><p>3) A dock worker pushes a 64 kg crate up a 2 m high, 7 m long ramp. Ignoring friction, how much work is done on the crate?</p><p>4) Anthony is standing on the top of a building 11 m high holding a 3 kg bowling ball. Mildred dug a 4 m deep hole next to the base of the building. What is the gravitational potential energy of the bowling ball relative to the bottom of the hole?</p><p>5) How much energy does it take to accelerate a 31 kg object from rest to 60 m/s?</p><p>6) How much energy is stored in a spring with a spring constant of 120 N/m if the spring is compressed a distance of 0.3 m from its free length?</p><p>7) An object 9 m off the ground has 160 J of gravitational potential energy. How much gravitational potential energy does it have relative to the bottom of a hole 2 m deep?</p><p>8) A 18 kg ball is thrown straight upwards with a speed of 43 m/s. What is the maximum height the ball reaches?</p><p>9) A 390 kg roller coaster starts from rest at a height of 33 m. What is its speed when it is 25 m off the ground?</p><p>10) Dennis drops a quarter from a skyscraper with floors spaced 4 m apart. If the quarter hits the ground at 41 m/s, then how many floors above ground is Dennis? (Ignore air drag.)</p><p>11) What is the minimum force required to increase the energy of a car by 140 J over a distance of 43 m? Assume the force is constant. Pre AP Energy Test </p><p>12) A vertical spring with k = 1100 N/m is compressed 0.6 m. A 3.1 kg ball is placed on top of the spring and released. How far above its starting point is the ball when it has a speed of 3 m/s?</p><p>13) George does 29 joules of work to lift a 5 kg box at a constant speed. If he drops it, how fast will the box be going when it hits the ground?</p><p>14) A 1 kg ball is placed on a vertical 830 N/m spring that is compressed 35 cm. When the spring is released, how high above its starting point will the ball go?</p><p>15) A horizontal spring is compressed 0.18 m and has a spring constant of 800 N/m. If this spring is used to launch a 2 kg ball, what is the velocity of the ball just as it leaves the spring?</p><p>16) A 6 kg ball rolls off of a 4 m high cliff traveling at 20 m/s. If it lands directly on top of an unstretched spring with a spring constant of 55 N/m, how far does it compress the spring?</p><p>17) A 61 kg stone falls from the top of a 690 m cliff. Neglecting friction, how fast will the stone be moving just as it hits the ground?</p><p>18) A 5 kg ball is dropped from a height of 30 m. What is its speed when it is 25 m off the ground?</p><p>19) Hutch did 12 joules of work lifting his kg dog bone 1 meter off the ground. If he drops it, how fast will it be traveling when it is .2 meters from the ground?</p><p>20) A 5kg object is placed on a 1000 N/m spring that is compressed 25 cm. When the spring is released, how fast will the object be travel at the instant it leaves the spring?</p>