A train is moving at 35 m/s to the east. it speeds up to 42 m/s east over the course of 40 seconds. what was trains acceleration

A boy throws a ball into the air at 10.2 m/s. Assuming that only gravity acts on the ball, how high does it rise, in m?

A certain very bright star has an effective surface temperature of 20 000 K. Assuming that it radiates as a blackbody, what is the wavelength at which () is maximum?

What is the definition for distance?

Convert 5.7 miles to km

What kind of force will move an object from its rest resting? A. inertial B. balanced C. unbalanced D. along a straight line

13/41 14. What is the SI unit for weight?

A circular curve of radius 150 m is banked at an angle of 15 degrees. A 750-kg car negotiates the curve at 85.0 km/h without skidding. a) what is the normal force on the tires exerted by the pavement.

A bird is flying at the speed of 24m/sec and accelerates to 75m/sec. It took 3.2 sec, what was the birds acceleration?

You have a suspect on the run in a dry, wooded area; they've ditched the gun but are hiding from you. how long do you have to find them before vital proof they fired a gun will probably no longer be on their body? A. a few hours B. about 24 hours C.

The atoms of a molecule come from two or more?