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by BlastRoom
Practice connecting impulse, momentum change, force, and contact time.
#physics
30 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
A 0.20 kg puck moves east at 6.0 m/s, hits a wall, and rebounds west at 4.0 m/s. Take east as positive. What is the puck's change in momentum?
A 0.050 kg ball travels right at 30 m/s, hits a paddle, and leaves left at 25 m/s. Take right as positive. What is the ball's change in momentum?
A 0.180 kg softball approaches a bat at 22 m/s and leaves in the opposite direction at 28 m/s. Take the approach direction as positive. What is the softball's change in momentum?
A 0.070 kg racquetball moves left at 18 m/s, strikes a wall, and rebounds right at 16 m/s. Take right as positive. What is the racquetball's change in momentum?
A 1.5 kg cart moves north at 3.0 m/s, hits a bumper, and rebounds south at 2.0 m/s. Take north as positive. What is the cart's change in momentum?
A 0.030 kg marble moves west at 12 m/s, hits a wall, and rebounds east at 8.0 m/s. Take east as positive. What is the marble's change in momentum?
A 0.62 kg soccer ball moves toward a player at 15 m/s and is kicked back at 20 m/s. Take the ball's original direction as positive. What is its change in momentum?
A 0.25 kg toy car rolls right at 2.4 m/s, hits a spring bumper, and rebounds left at 1.6 m/s. Take right as positive. What is the car's change in momentum?
A 0.010 kg superball falls downward at 9.0 m/s, hits the floor, and rebounds upward at 7.0 m/s. Take upward as positive. What is its change in momentum?
A 70 kg skateboarder rolls east at 4.0 m/s into a soft barrier and rebounds west at 1.0 m/s. Take east as positive. What is the skateboarder's change in momentum?
A 0.060 kg ball moves east at 18 m/s, hits a wall, and rebounds west at 12 m/s. Take east as positive. Contact lasts 4.0 milliseconds. What is the magnitude of the average force on the ball?
A 0.20 kg puck slides north at 12 m/s, strikes a board, and rebounds south at 8.0 m/s. Take north as positive. Contact lasts 10 milliseconds. What is the magnitude of the average force on the puck?
A 0.045 kg golf ball moves toward a club at 40 m/s and leaves opposite its original direction at 30 m/s. Take the original direction as positive. Contact lasts 2.0 milliseconds. What average force magnitude acts on the ball?
A 0.40 kg lab cart moves right at 5.0 m/s, hits a bumper, and rebounds left at 3.0 m/s. Take right as positive. Contact lasts 20 milliseconds. What is the magnitude of the average force on the cart?
A 0.0020 kg rubber ball moves downward at 6.0 m/s, hits the floor, and rebounds upward at 5.0 m/s. Take upward as positive. Contact lasts 1.0 millisecond. What average force magnitude acts on the ball?
A 0.090 kg hockey puck moves left at 20 m/s, hits the boards, and rebounds right at 15 m/s. Take right as positive. Contact lasts 6.0 milliseconds. What is the magnitude of the average force on the puck?
The graph shows force on two identical carts during two different stops. What conclusion is supported by the two force-time curves?
A force-time graph compares two ways to stop the same moving cart. Which statement best interprets the curves?
Two helmet liner tests stop identical dummy heads from the same speed. Based on the graph, what is true of tests R and S?
Look at the force-time graph for two stops of the same puck. What does the area comparison show?
A crash sled can be stopped by either force pattern shown. Which claim follows from the force-time graph?
A lab sensor records the two rectangular force-time curves for identical balls. What do the curves show?
The graph compares two stopping pads acting on the same cart. Which statement is consistent with the graph?
Two force-time curves stop identical gliders. What is the best reading of the graph?
In two otherwise similar crashes, a car with a crumple zone and a rigid car both bring the driver from 16 m/s to rest. How does the crumple zone reduce the average force on the driver?
A passenger moves forward during a sudden stop, and an air bag inflates before the passenger reaches the dashboard. How does the air bag reduce the force on the passenger?
A bike helmet has a foam liner that crushes during a fall instead of staying rigid. Why does that help protect the rider's head?
A catcher pulls the glove backward while catching a fast baseball instead of holding the glove still. What physics reason explains this technique?
A gymnast lands on a thick foam mat instead of a hard floor after the same jump. What does the mat change to reduce the force on the gymnast?
A delicate instrument is shipped in thick foam so it comes to rest gradually if the box is dropped. What is the foam designed to do during impact?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Elastic and Inelastic Collisions
25 questions
