Author Question: What is the magnitude of the sum of the forces that is required to accelerate a 1200-kg car ... (Read 59 times)

roselinechinyere27m · **on:** Jul 29, 2018

What is the magnitude of the sum of the forces that is required to accelerate a 1200-kg car uniformly from 0 m/s to 27.0 m/s in 10.0 s?

A) 444 N
B) 1620 N
C) 3240 N
D) 4360 N
E) 11800 N

Question 2

In 1994, fragments of Comet P/Shoemaker-Levy 9 collided with Jupiter. Assume that these fragments came from very very far away with no initial speed, and neglect the effect of the sun.

What was their speed when they neared Jupiter's surface at a distance of 71.4 106 m from its center? Jupiter has a mass of 1.90 1027 kg, and G = 6.67 10-11 N m2/kg2. A) 10,400 m/s
B) 11,200 m/s
C) 35,500 m/s
D) 42,100 m/s
E) 59,600 m/s