Two books with different masses fall off the same bookshelf. As they fall, which has more kinetic energy and why

In 4 minutes, a conveyor belt moves 300 pounds of recyclable aluminum from the delivery truck to a storage area. a smaller belt moves the same quantity of cans the same distance in 20 minutes.

Suppose you are an astronomer, and a child asks you to explain the light given off by stars. In your own words, describe the relationship between the energy, frequency, and wavelength.

A baseball player throws the ball to first base to make an out consider the forces acting only on the ball when is the ball is in the hand of the player choose all that apply Gravity, Spring, Tension, Normal, friction, air resistance, Apply Force

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

What is SI unit fir force

Cardiovascular exercise can

Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, but Kathy leaves the starting line 1.00 s after Stan does. Stan moves with a constant acceleration of 3.1 m/s2 while Kathy maintains an acceleration of 4.

A 0.0010-kg pellet is fired at a speed of 50.0m/s at a motionless 0.35-kg piece of balsa wood. When the pellet hits the wood, it sticks in the wood and they slide off together. With what speed do they slide?

Jim measures the count rate of a sample of americium-241 as 120cpm. Roughly how long would it take for the count rate to fall below 4 cpm. Show your working

Explain and give an example of newtons 3rd law of motion