If speed is 20ms and distance travelled is 72 km find time taken

A force is applied to an object at rest with a mass of 100 kg. A force twice as large is applied to another object at rest with a mass of 100 kg. What differences in their motion would you observe? Explain your reasoning.

Naturally occurring magnets are called

Calculate the potential energy of a 5 kg object sitting at the top of a 2 meter ramp.

A beaker has a mass of 125g. What is the mass of this beaker in decigrams

One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?

What is the difference between speed and velocity and give an example.

Water flows over a section of niagara falls at the rate of 1.2x10^6 and falls 50.0 m. how much power is generated by the falling water

What is the darkest side of the moon called?

Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to qualify. What is the most likely reason that Brian can't qualify?

1. Are BEVs or hydrogen fuel cell vehicles a more promising transportation technology for the future? 2. Should car companies be required to produce electric cars?