a 10.0kg object moving at 5.00 m/s experiences a force of 20.0N. How far must it be pushed by this force for its speed to reach 15.0 m/s?

Answer: 50 m.

Explanation:

Assuming there is only 20N force acting on the object, use F = m * a where F is force, m is mass and a is acceleration.

You'll get a = 2.

Next, write what you know.

acceleration (a) = 2

initial velocity (u) = 5

final velocity (v) = 15

distance (s) = ?

Now, use v² = u² + 2as and find s.