HESI Physics Practice Test

Which of the following answer choices results in the highest average speed\(?\)

During acceleration testing, a performance car launches from the starting line, and 4 seconds later is traveling 27 m/s. It continues accelerating, and 10 seconds after launch the car reaches 44 m/s.

What is its average acceleration from 27 m/s to 44 m/s?

Luke is driving to work. The first mile of his drive takes 3 minutes. The next 9 miles of his drive take 12 minutes. What is his average speed over this 10 mile stretch in miles per hour?

A solid ball is launched straight up with a velocity of 12 m/s from a point 25 meters above the ground. It reaches its maximum height and begins to come back down. It passes the point from which it was launched and continues to free fall straight down until it reaches the ground (25 meters below the launch point).

What is the total distance the ball travels from when it is launched upwards until it strikes the ground?

A cannonball is fired from a cannon oriented horizontally on a castle wall, 7 meters above the ground. The cannonball strikes the ground 836 meters (horizontally) away. What is the magnitude of the velocity of the cannonball as it exits the cannon?

Use g = 9.81 m/s² for the acceleration due to gravity. Assume there is no air resistance.

You may find the following formulas helpful:

\(v_f = v_i + at\)

\(v_f^2 = v_i^2 + 2ad\)

\(d = \frac{1}{2}at^2 + v_it\)

A force of 20 N pushing to the right accelerates an object along a level floor at 5 m/s² (to the right). Assuming there is no friction between the object and the floor, determine the weight of the object using 9.81 m/s² for the acceleration due to gravity.

An object weighing 20 N on Earth (g = 9.81 m/s²) is taken to the planet Jupiter. On Jupiter, which has an acceleration due to gravity of 24.8 m/s², what will the same object weigh?

A box with a mass of 10 kg is pulled to the left by a rope attached to the box. The rope exerts a force of 15 N parallel to the ground. Because frictional force is acting opposite of the direction of motion, the box accelerates at 1.0 m/s² to the left. Determine the magnitude of the frictional force.

A wheel is rotating at a rate of 1200 revolutions per minute. How many seconds will it take to complete 90 revolutions?

An industrial winch drum with a radius of 0.10 m is rotating in order to lift a hanging load. How many revolutions must the drum turn in order to vertically lift a load 1.2 m?

A 0.5 kg object attached to a 0.75 m string orbits around a central point with a speed of 8 m/s. Ignoring gravity, how much tension does the string experience?

A baseball has a mass of 0.145 kg. How fast must it be thrown in order to have a kinetic energy of 57 J?

A ball with a mass of 0.17 kg sits on a shelf. The ball has a potential energy of 2.03 J. How high off the ground is the ball? Use g = 9.81 m/s² for the acceleration due to gravity.

A 0.08 kg ball of putty is thrown with a velocity of 15 m/s to the right. The putty strikes a stationary block weighing 0.2 kg. The putty sticks to the block and the two begin traveling together. What is the magnitude of the velocity of the putty and block combination immediately after they collide?

During testing, a car with a mass of 1700 kg traveling 25 m/s is driven into a solid wall. The collision with the wall causes the car’s velocity to decrease to 0 m/s over the course of 0.75 seconds. What force does the wall exert on the car?

The force of attraction, F, between two masses due to gravity can be found using the equation:

\(F = \dfrac{G m_1 m_2}{r^2}, \text{where} \) \( G = 6.67 × 10^{−11} \text{ Nm}^2/\text{kg}^2\)

The force of attraction between two planets is F = 8.56 × 10¹⁶ N, one of the planets has a mass of m₁ = 5.98 × 10²⁴ kg, and the distance between the planets is r = 5.46 × 10¹⁰ m.

Find the mass of the second planet.

The wave in a certain liquid has a frequency of 4 Hz. The distance between subsequent wave peaks is 0.10 m. What is the speed of the wave in meters per second?

The speed of light traveling through a diamond is 1.241 × 10⁸ m/s, while the speed of light in a vacuum is 2.998 × 10⁸ m/s. What is the index of refraction for diamond?

Recall that \(n = \dfrac{c} {v_s}\)

The speed of light in a vacuum is \(\)2.998 × 10⁸ m/s, and a light-year is defined as the distance light travels in one year. Proxima Centauri, the closest star outside our solar system, is approximately 4.25 light years from Earth. How many meters from Earth is this? Use 365.25 days per year in your calculations.

What is the proper name for the object shown in the photo below?

Which particle of an atom is not located in the nucleus?

The circuit below consists of a battery, a switch, and a single resistor (the light bulb). When the switch is closed, a current of 3 amps flows through the circuit. The battery produces a voltage of 48 V. What is the resistance of the light bulb?

A circuit consists of a 9 volt battery and three resistors in series. The first resistor has a resistance of 6 ohms and the second has a resistance of 10 ohms. A current of 0.41 amps flows through the circuit. What is the resistance of the third resistor?

Coulomb’s Law can be expressed with the following formula:

\(F = \dfrac{kq_1q_2}{r^2} \text{ where:}\)
 
\(k=9×10^9 \dfrac{\text{Nm}^2} {\text{C}^2}\)
 
\(q_1 = \text{Charge 1}\)
 
\(q_2 = \text{Charge 2}\)
 
\(r = \) \( \text{Distance between the charges}\)

Two different charges of 12 × 10⁻⁶ C and 20 × 10⁻⁶ C are separated by a distance such that the force between the charges is 24 N. What is the distance between the two charges in centimeters?

Which of the following three materials are magnetic?