BMST - Basic Math and Science Newton's Laws of Motion Questions and Answers 4

Question 1

A hockey puck slides on a frictionless ice surface with constant velocity. What is the net force on the puck?

Accepted Answer

Zero

Answer

Constant velocity means no acceleration, so by Newton's Second Law, the net force must be zero.

Question 2

When you jump off a boat onto a dock, the boat moves backward. This demonstrates:

Accepted Answer

Newton's Third Law

Answer

Your push on the dock (action) results in an equal and opposite reaction that pushes the boat backward.

Question 3

If a net force of 60 N acts on a 12 kg object, what is the object's acceleration?

Accepted Answer

5 m/s²

Answer

Using a = F/m = 60/12 = 5 m/s².

Question 4

A ball is thrown upward and reaches its highest point. At that instant, ignoring air resistance, the net force on the ball is:

Accepted Answer

Directed downward due to gravity

Answer

Gravity continuously acts downward regardless of the ball's momentary velocity.

Question 5

Which scenario best illustrates Newton's First Law?

Accepted Answer

Dishes sliding off a tablecloth pulled quickly

Answer

The dishes tend to remain in place (inertia) while the tablecloth is pulled away beneath them.

BMST - Basic Math and Science Test Practice Test