A train travels 98 kilometers in 4 hours, and then 99 kilometers in 1 hours. What is its average speed?

Taro stated that when someone hits a golf ball with a club, the amount of energy the ball has changes, the amount of energy that the club has changes, and the total energy of the system that includes the ball and the club increases.

What is the frequency of a wave that has a wave speed of 80 m/s and a wavelength of 0.20 m?

If a wheel falls from an airplane that is flying horizontally at an altitude of 500 m, how long will it take for the wheel to strike the ground? 10 s 50 s 80 s 100 s

When dealing with the relationship of the current and resistance of the resistance goes up the flow of current will?

The longest kick in CFL history was 83.2 metres. If the ball remained in the air for 4.12 seconds

A team of dogs is pulling a sled with a net force of 2000 N. The sled is accelerating a 2.2 m/s^2. What is the mass of the sled?

Is the reduction of copper from copper (ii) oxide by carbon exothermic or endothermic? what is the sign of the energy change?

True or false we have mucus that covers are stomach which prevents or stomach acid from digesting or stomach

a man applies a force of 100n to a rock for 60 seconds but the rock does not move what is the amount of work done by the man on the rock

The driver of a car traveling at 32 m/s applies the brakes and undergoes a constant deceleration of 2.25 m/s^2.