How much force is needed to produce an acceleration of 20ms^2 in a body of mass 500gm

What happens because of nuclear fusion?

A car is traveling 80 km/h. if the car's speed remains constant, how far will it have traveled in 3 hours?

A ball encounters no air resistance when thrown into the air with 100 J of kinetic energy, which is transformed to gravitational potential energy at the top of its trajectory. What is its kinetic energy when it returns to its original height

Briefly explain the difference between being self-centered and being self-aware. Which do you prefer and why?

The power needed to operate your body is about 100 watts. suppose a human body (of typical mass) could run on fusion power and could convert 0.6 % of its mass into energy. part a how much energy would be available through fusion?

What is general relativity in easy terms?

Temperature and volume are directly or inversely

My Notes A basketball rolls across a classroom floor without slipping, with its center of mass moving at a certain speed. A block of ice of the same mass is set sliding across the floor with the same speed along a parallel line.

How does sound travel through waves?

Solve for real t: - 25=20t-5t^2