A ball is thrown with an initial speed of 20m/s at an angle of 60 to the ground. If air resistance is negligible, what is the ball 's speed at the instant it reaches its maximum height from the ground.

A certain hydraulic system is designed to exert a force 100 times as large as the one put into it. (a) What must be the ratio of the area of the slave cylinder to the area of the master cylinder

What kind of force produces periodic oscillations

New research is using functional magnetic resonance imaging (MRI), a scan of the brain that shows specific areas that are activated during certain tasks, as a lie detector test.

When planning a workout for muscular endurance, you'll need fewer workouts to reach your goal if you do compound exercises. a. True b. False

What relation does work and power have with physical education

A moving object always has energy in its?

What is the volume of a box that is 12 cm long, 2 cm wide, and 3 cm high?

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?

If a soundproof door is almost shut but still leaves a small opening, what wave phenomenon is responsible for someone being able to hear sound from the room while standing by the wall to the side of the opening?

What happens to the force of gravitational attraction if the distance between two objects increase?