Whta is the mechanical advantage when the effort force is 20 and the resistance force is 5

Suppose a child drives a bumper car head on into the side rail, which exerts a force of 4000 N on the car for 0.200 s. (a) What impulse is imparted by this force?

True or False? All waves transmit energy but not matter from one location to another

Calculate: The time taken for a plane to travel 3,000 km at a speed of 200 m/s

Galileo found that a ball rolling down one inclined plane would roll how far up another inclined plane?

Two pieces of flint rock produce a visible spark when they are struck together. During this process, mechanical energy is converted into (1) nuclear energy and electromagnetic energy (2) internal energy and nuclear energy (3) electromagnetic energy

What is the force of attraction between two masses 5kg and 8kg at a distance of 60cm apart. (A) 4.5*10-9N (B) 5.6*10-9N (C) 7.4*10-9N (D) 8.0*10-9N (E) 10.5*10-9N

A 1100 kg car pushes a 1800 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N.

The model that describes a Sun-centered solar system is called theA. laws of motion. B. geocentric model. C. heliocentric model. D. general theory of relativity.

A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 20.0 m/s. Then the truck travels for 20.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.

which of the following best describes the amount of natural resources found here in the united states. coal is the only natural resources found in abundance in the US. Natural resources here are lacking and must all be imported to the us.