BS Physics Fundamentals

Question 1

According to Newton's second law, which equation correctly relates net force, mass, and acceleration?

Accepted Answer

F = ma

Answer

F = mv

Answer

F = m/a

Answer

F = pa

Question 2

In projectile motion, what primarily determines the horizontal range of a horizontally launched object (ignoring air resistance)?

Accepted Answer

The time the object is in the air

Answer

The initial vertical velocity

Answer

The gravitational acceleration alone

Answer

The mass of the object

Question 3

The work-energy theorem states that the net work done on an object equals:

Accepted Answer

The change in its kinetic energy

Answer

The change in its potential energy

Answer

The product of force and time

Answer

The total mechanical energy

Question 4

Two objects undergo a perfectly inelastic collision. Which quantity is conserved?

Accepted Answer

Momentum only

Answer

Kinetic energy only

Answer

Both momentum and kinetic energy

Answer

Neither momentum nor kinetic energy

Question 5

If the distance between two masses is doubled, Newton's law of universal gravitation predicts the gravitational force between them becomes:

Accepted Answer

One-quarter as strong

Answer

Four times stronger

Answer

Twice as strong

Answer

One-half as strong

Question 6

An object in uniform circular motion experiences centripetal acceleration directed:

Accepted Answer

Toward the center of the circle

Answer

Tangent to the path in the direction of motion

Answer

Away from the center of the circle

Answer

Perpendicular to the plane of the circle

Question 7

A wrench applies torque to a bolt. If the applied force is doubled and the lever arm is halved, how does the torque change?

Accepted Answer

It remains the same

Answer

It doubles

Answer

It is halved

Answer

It quadruples