Which force acts to counter the motion whenever two surfaces come into contact

When a bat strikes a ball, the force exerted can send the bat backwards. The force exerted on the bat is due to Newton's II law.

A ball is dropped from the top of a tall building. Slightly later a second ball is thrown downward and catches up with the first ball.

What do the four terrestrial planets and the four gas giant planets have in common? a. they all revolve about the sun in the same direction. b. they are all the same size. c. they all have identical orbital shapes. d.

Calculate the average speed in meters if a golf cart runs 140 meters in 10 seconds

What force do mountain climbers have to fight

A motorist driving at 25 meters/second decelerates to 15 meters/second. The combined mass of the vehicle and the driver is 1.5 * 10³ kilograms. What is the amount of mechanical work done by the vehicle?

All forces are different each exerts a particular type of effect on an object

Witch statement about polymers is true

Two bullets have masses of 3,0 g and 6.0g, respectively. both are fired with a speed of 40.0 m/s. Which bullet has more kinetic energy? What is the ratio of their kinetic energies

What does it mean that a form of energy might take more energy to harness than it provides? Are renewable resources always renewable, or can they become non-renewable? Why aren't renewable resources used for everything that we use energy for?