Divide 3500km by 3h (according to the equation v = d/t) and you get 1167km/h.
Answer: 100 N
Explanation:
F = ma = 0.5(200) = 100 N
Answer:
Mass doubles
Explanation:
Since F = ma, and given that the acceleration stayed constant, the mass must have changed. (Assuming thatt when the problem states the force doubles, they mean the net force doubles). Note, that the mass does not have to change if the acceleration is zero.