A speedboat must develop 120 horsepower in order to move at a constant speed of 48 mph through the water. What is the average resistive force through the water?
Avg Resistant Force = pounds
A 3.4 kg ball travels from left to right at 9 m/s. A bat drives the ball in the opposite direction with a velocity of 22 m/s. If the time of contact was 0.09 seconds, what was the average force on the ball?
Average Force = Newtons
A car traveling at 28 m/s crashes into a truck with a mass of 9,100 kg stopped at a stoplight. What is the velocity of the wreckage immediately after the crash if the cars mass is 1,500 kg? (assume the truck and car stay together as one object)
Velocity after impact = m/s
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