EOC Physics 1

Question 1

A car accelerates from rest to 20 m/s in 5 seconds. What is its acceleration?

Accepted Answer

4 m/s²

Answer

Acceleration = change in velocity / time = (20 - 0) / 5 = 4 m/s².

Question 2

According to Newton's First Law, an object at rest will remain at rest unless:

Accepted Answer

a net external force acts on it

Answer

Newton's First Law (inertia) states that objects remain in their state of motion unless acted upon by a net external force.

Question 3

A 10 kg object is pushed with a net force of 30 N. What is its acceleration?

Accepted Answer

3 m/s²

Answer

Newton's Second Law: F = ma, so a = F/m = 30/10 = 3 m/s².

Question 4

Which of the following is a scalar quantity?

Accepted Answer

Speed

Answer

Speed is a scalar quantity because it has magnitude only, while velocity, force, and displacement are vectors with both magnitude and direction.

Question 5

A ball is thrown horizontally from a cliff. Which statement about its motion is correct?

Accepted Answer

Vertical acceleration is 9.8 m/s² downward

Answer

Gravity causes a constant vertical acceleration of 9.8 m/s² downward, while horizontal velocity remains constant (projectile motion).

EOC - End-of-Course Test Practice Test