1. A tiger leaps horizontally from a 7.5 meter high rock with a speed of 4.5 m/s. How far from the base of the rock will she land?
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1 HONORS PHYSICS PROJECTILE MOTION 1. A tiger leaps horizontally from a 7.5 meter high rock with a speed of 4.5 m/s. How far from the base of the rock will she land? 2. A diver running 1.6 m/s dives out horizontally from the edge of a vertical cliff and reaches the water below 3.0 seconds later. a) How high is the cliff? b) How far from the base of the cliff does the diver land? 3. A ball is thrown horizontally from the roof of a building 56 meters tall and lands 45 meters from the base. What was the initial speed of the ball? 4. A ball thrown horizontally at 22.2 m/s from the roof of the building lands 36 meters from the base of the building. How high is the building? 5. The pilot of an airplane traveling horizontally at 44 m/s wants to drop supplies to flood victims isolated on a patch of land 160 meters below. The supplies should be dropped how many seconds before the plane is directly overhead? 6. A bullet is fired horizontally from a gun. At the same time a similar bullet is dropped from the same height. The fired bullet will: a) hit the ground first b) hit at the same time as the dropped bullet c) hit the ground second d) never hit the ground 7. A marble with a speed of 0.20 m/s rolls off the edge of a table 0.80 m high. a) How long does it take it to hit the floor? b) How far from the table will it hit the floor? 8. A steel ball rolls with constant velocity across a tabletop m high. It rolls off and hits the ground meters from the edge of the table. How fast was the ball rolling when it left the table?
2 Directions: Solve each and justify all answers. A A ball initially at rest rolls across a table with an acceleration rate of 0.55 m/s 2. The ball leaves the table with a speed of v 0 and lands 0.69 meters from the edge of the table. (a) Find the time it takes the ball to reach position A in the picture above. (b) Find the speed of the ball, v 0, as it leaves the table. (c) Find the length of the table. (d) Draw the horizontal velocity vs. time (v x vs. t) graph for the entire trip of the ball using the graph below, and completely and accurately label the graph.
3 (b) (c) Draw and label the acceleration vs. time graph for the time period of 0 to 25 seconds.
4 EXTRA PROBLEMS 1. A car drives off a wharf at 15 m/s. If the wharf is 25 m above water, calculate: a) the time of flight. Assume down is positive. b) the horizontal distance traveled c) the velocity at which the car hits the water. 2. A marble with a speed of 2.0 m/s rolls off the edge of a table 1.8 m high. a) How long does it take it to hit the floor? b) How far from the table will it hit the floor? 3. A ball rolls with a speed of 2.0 m/s across a level table that is 1.0 m above the floor. Upon reaching the edge of the table, it follows a parabolic path to the floor. How far along the floor is the landing spot from the table? 4. A rifle is fired horizontally and travels m. The rifle barrel is 1.90 m from the ground. What speed must the bullet have been travelling at? Ignore friction. 5. A skier leaves the horizontal end of a ramp with a velocity of 25.0 m/s and lands 70.0 m from the base of the ramp. How high is the end of the ramp from the ground? 6. A rescue pilot drops a survival kit while her plane is flying at an altitude of m with a forward velocity of m/s. If air friction is disregarded, how far in advance of the starving explorer s drop zone should she release the package? 7. A cat runs and jumps from one roof top to another which is 5 meters away and 3 meters below. Calculate the minimum horizontal speed with which the cat must jump off the first roof in order to make it to the other. 8. An object is thrown off a cliff with a horizontal speed of 10 m/sec. After 3 seconds the object hits the ground. Find the height of the cliff and the total horizontal distance traveled by the object. 9. A ski jumper competing for an Olympic gold medal wants to jump a horizontal distance of 135 meters. The takeoff point of the ski jump is at a height of 25 meters. With what horizontal speed must he leave the jump? 10. A motorcycle stunt driver zooms off the end of a cliff at a speed of 30 meters per second. If he lands after 0.75 seconds, what is the height of the cliff?
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3) A horse gallops a distance of 10 kilometers in a time of 30 minutes. Its average speed is A) 15 km/h. B) 20 km/h. C) 30 km/h. D) 40 km/h.
Physics Keller Midterm exam review The midterm exam will be seventy questions selected from the following. The questions will be changed slightly, but will remain essentially the same. 1) A truck is moving