1.A 9 kg object is moving in a straight-line with an initial speed of 1 m/s. It takes 18 s for the speed of the object t
Posted: Sat Jul 09, 2022 12:01 pm
1.A 9 kg object is moving in a straight-line with an initialspeed of 1 m/s. It takes 18 s for the speed of the object toincrease to 14 m/s. What is the rate at which kinetic energy isincreasing (in J/s)? You may treat this as an isolatedsystem.
2.A ball is thrown straight up with an initial speed of 13 m/s.The ball was released h m above the ground, but when it returnsback down, it falls into a hole 3 m deep. If the ball’s speed atthe bottom of the hole is 24 m/s, what height h (in m) above theground was the ball released? You may treat this as an isolatedsystem.
2.A ball is thrown straight up with an initial speed of 13 m/s.The ball was released h m above the ground, but when it returnsback down, it falls into a hole 3 m deep. If the ball’s speed atthe bottom of the hole is 24 m/s, what height h (in m) above theground was the ball released? You may treat this as an isolatedsystem.