Unit 4 Review
Quiz by Stephanie Carson
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25 questions
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- Q11. What is the momentum of a 4,000 kg truck traveling at 20 meters per second?200 kg●m/s0.005 kg●m/s80,000 kg●m/s4000 kg●m/s120s
- Q22. A 40 kilogram cart is traveling along a straight line. Its momentum is 200 kg●m/s. What is the velocity of the cart?0.2 m/s40 m/s8000 m/s5 m/s120s
- Q33. The momentum of a teletubby that is running after you at 4 m/s is 250 kg●m/s. What is the teletubby’s mass?1000 kg4 kg62.5 kg0.016 kg120s
- Q44. The change in momentum of an object is equal to the ______________ applied to that object.timeimpulseforce120s
- Q55. A 400 kg wagon is currently rolling on a flat path at a velocity of +5 m/s. What will the change in momentum be if it is brought to a stop?-2000 kg●m/s+2000 kg●m/s-80 kg●m/s+ 80 kg●m/s300s
- Q66. Batman has a huge rock thrown directly at him. He has to apply a +40 N force for 2 seconds in order to bring the rock to a stop. What impulse was needed to bring the rock to a stop?+ 20 N●s+ 80 N●s- 20 N●s- 80 N●s300s
- Q77. What braking force is needed to stop a 1,500 kg car moving at 15 m/sec in a time of 2 seconds?-22,500 N-11,250 N+22,500 N+11,250 N300s
- Q88. The 2,000 kg Batmobile is currently traveling at 50 m/s (approximately 100 mph). Batman sees a police officer and realizes he needs to slow down to 25 m/s. If his brakes apply a force of -4,000 N, how much time will it take Batman to slow down to the speed limit?25 s50 s6.25 s12.5 s300s
- Q99a. Which of the above balls has more momentum?Right ballLeft ball120s
- Q109b. Which of the above balls can be stopped with less force?Left ballRight ball30s
- Q1110. Use the above picture to find the missing velocity.7.5 m/s, left7.5 m/s, right15 m/s, right15 m/s, left300s
- Q1211. Use the above picture to find the velocity of the gases expelled from the rocket downward.11,111 m/s10, 180, 000 m/s3.6 m/s45.45 m/s300s
- Q1312. Use the above picture to find the final velocity of the boy and the sled together.3.375 m/s, right3.75 m/s, right220 m/s, right4.125 m/s, right300s
- Q1413. Use the above picture to find the missing velocity.1.8 m/s, right0.09 m/s, right800 m/s, right300s
- Q1514. Use the above picture to find the velocity of the two carts together after the collision.1.3 m/s, right0.67 m/s, right2000 m/s, right300s
