How does sandpaper increase friction

A car accelerates forward at 3.5 m/s2. If the car has a mass of 873 kg, what is the force applied to the car?

What is an example for outcome

The moon is a satellite that orbits the earth at a radius of 3.85 * 108 m. The mass of the earth is 5.98 * 1024 kg. What is the orbital speed of the moon?

Which scientist called what he observed cells

16' wide and 44' long. If a piece of plywood has 32 sq. ft., how many pieces of plywood does the customer need to cover the floor?

Two football players collide on the field. Before the collision, their total momentum was 450 kgm/s to the north. What is their total momentum after the collision? A. More than 450 kgm/s north B. 450 kgm/s north C. Less than 450 kgm/s north D.

Jane and John Doppler effect

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s

While working out, a man performed 200 j of work in 3 seconds. What was his power?

A funnel-shaped low pressure closure