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

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s