A particle travels 15 times around a 10-cm radius circle in 42 seconds. what is the average speed (in m/s) of the particle?

A certain car traveling in a straight line path has a velocity of + 10.0 m/s at some instant. after 3.00 s, its velocity is + 6.00 m/s. what is the average acceleration of the car during this time interval?

Relate real life phenomenon of mechanic

When you are running around a track, what kind of energy are you using?

In 1 km races, runner 1 on track 1 (with time 2 min, 28.13 s) appears to be faster than runner 2 on track 2 (2 min, 28.48 s). however, the length l2 of track 2 might be slightly greater than the length l1 of track 1.

why liquids solidify when they are cooled.

Johanna is studying what happens to the energy as a ball rolls down a ramp. What is she studying? Check all that apply. 1. gravitational potential energy 2. electrical energy 3. kinetic energy 4. mechanical energy 5. elastic potential energy

The density of sugar is 1.59 g/cm3. the mass of a sample is 4.0 g. find the volume of the sample

How much force is needed to accelerate an object of mass 90 kg at a rate of 1.2 m/s2? 0.013 N 75 N 108 N 1080 N

No work is done on an object when a force acting on the object does not move it. True False

wavelength of a light whose second-order dark band forms a diffraction angle of 15.0° when it passes through a diffraction grating that has 250.0 lines per mm