HESI Physics Practice Test 1

Question 1

What is the speed of sound in a vacuum?

Accepted Answer

0 m/s

Answer

25 m/s

Answer

222 m/s

Answer

331.4 m/s

Question 2

average speed = d/t
is the distance an object travels divided by the time it takes to travel in the same direction.

Accepted Answer

Velocity

Answer

Force

Answer

Acceleration

Answer

Scalar Quantity

Question 3

A ball is kicked off the edge of a 34-meter-high roof. The ball is given a horizontal speed of 12.5 m/s. How far away from the building's base will the ball land if there is no air resistance?

Accepted Answer

32.86 m

Answer

19.35 m

Answer

30.80 m

Answer

28.44 m

Question 4

Kath's car went from 0 to 60 miles per hour in 2.5 seconds. What was the car's rate of acceleration?

Accepted Answer

24 m/s²

Answer

25 m/s²

Answer

0 m/s²

Answer

-26 m/s²

Question 5

Which of the following statements about a negatively charged particle is correct?

Accepted Answer

There are more electrons than protons in it.

Answer

It is empty of electrons.

Answer

It has the same amount of protons and electrons.

Answer

There are more protons than electrons in it.

Question 6

The acceleration due to gravity on Earth is -9.8 m/s². Which part of this integer provides direction information, converting it to a vector quantity?

Accepted Answer

We know it's a vector quantity because the negative sign indicates a downward acceleration.

Answer

Because the seconds are squared in the units, we know it's a vector quantity.

Answer

Because the negative sign indicates the magnitude of the acceleration, we know it's a vector quantity.

Answer

The negative sign indicates that the acceleration is upward, therefore we know it's a vector quantity.

Question 7

On the ice, a hockey puck comes to a slow stop. The puck has a mass of 0.5 kg and a friction force of 2.3 N between it and the ice. What is the puck's rate of acceleration?

Accepted Answer

-4.6 m/s²

Answer

4.2 m/s²

Answer

-4.2 m/s²

Answer

4.6 m/s²

Question 8

The quantity  stated in units of magnitude and is described simply by a numeric value.

Accepted Answer

Scalar Quantity

Answer

Average Velocity

Answer

Average Speed

Answer

Force

Question 9

The refractive index of chloroform is 1.44. In this medium, what is the speed of light?

Accepted Answer

2.08 x 10⁸m/s

Answer

4.6 x 10⁸ m/s

Answer

3.08 x 10⁸m/s

Answer

2.27 x 10⁸m/s

Question 10

A human weighs 76 kg. What is this person's weight on the earth?

Accepted Answer

745 N

Answer

690 N

Answer

455 N

Answer

820 N