What is physics?

Jamie throws a ball with a force of 50N a distance of 25m. Trish throws the ball with the same amount of force, but the ball only goes 15m. Which girl does less work

3. An explosion of gas from a Hawaiian volcano blows a bunch of rocks into the sky. Each has 2000J of kinetic energy. Find the mass, to the nearest 0.001kg if its velocity is 32m/s.

Consider the elastic head-on collision between a sledge hammer with 2000 g mass and a golf ball with a 5 g mass. The initial velocity of the sledge hammer is 16 m/s, and the golf ball is initially at rest.

A substance that produces H + ions in solution is a. A) soap B) acid C) salt D) base

A carpenter's sketch of a room does not include a scale. She measures a wall that has been built and finds that it is 38.5 ft. long. On the blueprint this wall is 7 in. long. What is the scale for this blueprint?

Which force acts as an object to move it from rest or a constant straight line motion

Structure and Function of kidney

What happens if you double the number of batteries used in a circuit? (Assume all of the batteries A. The current doubles only. o B. The voltage doubles only. C. The current decreases. D The voltage decreases. 0 E. The voltage and current doubles.

What are the three properties of gravitational force between two objects?

One student did an experiment with salt water. The steps of the experiment are shown below. Pour half a cup of salt water into a pan. Keep the pan outside in the sun for a day. Allow all the water in the pan to evaporate.