A210 kg meteoroid is heading toward the earth accelerates by 2.4 × 105 m/s2.

according to newton's second law of motion, what is the size of the force that must have acted to change the motion of the meteoroid?

a.
87.5 n

b.
5.04 × 107 n

c.
8.75 × 10-4 n

d.
1.14 × 103 n

show your work!

Acar travels along a highway with a velocity of 24 m/s, west. the car exits the highway; and 4.0 s later, its instantaneous velocity is 16 m/s, 45° north of west. what is the magnitude of the average acceleration of the car during the four-second interval?

In physics the desire of an object to keep doing what it is doing is termed?

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.