Asoccer ball that is kicked moves at a speed of 150 m/s. after 20 seconds it stops, what is the soccer balls acceleration?

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

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