Imagine a rock is dropped from the top of a tall building. After 2 seconds of falling, the rock's instantaneous speed is approximately 20m/s. does anyone know is it true or false

How do you calculate the gravitational force on a rubber ball which has a mass of 50g

A model rocket is launched straight upward with an initial speed of 50.0 m/s. It accelerates with a constant upward acceleration of 2.00 m/s2 until its engines stop at an altitude of 150 m.

Explain the advantages and disadvantages of a dynamo compared with batteries for bicycle lights

A example of using a muscular strength?

How do I find deceleration

In what ways does a river carry its load?

What is a unit of mass?

Which is not an era of the Phanerozoic eon

Newton's third law states that when an object exerts a force on another object, the second object exerts an equal but opposite force on the first object. Which of the following shows an example of this? a.

A car is moving 14.4 m/s when it hits the brakes. It slow from 78.8 m, which take 9.92s. It then accelerates at 1.83 m/s 2 for 4.50 s. What is the total displacement?