Work, Energy, and Power - MDCAT Physics - MCQS

Work, Energy, and Power are essential concepts in physics and are tested on heavily in the MDCAT. In this blog post, we will discuss these concepts in detail, and we will also provide some practice questions so that you can test your understanding. By the end of this post, you will be well-prepared to answer any Work, Energy, and Power questions that come up on the MDCAT.

So let's get started!

Work is done when a force moves an object. The amount of work done is equal to the force times the distance moved.

Energy is the ability to do work. There are many different forms of energy, including kinetic energy, potential energy, thermal energy, and electrical energy.

Power is the rate at which work is done. The unit of power is the watt, which is equal to one joule of work done per second.

In MDCAT Physics, you will need to know about the different forms of energy, how they can be converted from one form to another, and how they relate to work and power. You will also need to be able to solve problems involving Work, Energy, and Power.

Here are some of the trending and high ranking keywords on Oscillation and MDCAT 2023 physics:

• Work
• Energy
• Power
• Oscillation
• Pendulum
• Spring
• Wave

1. A force of 10 N is applied to a box for 2 seconds, causing it to move 5 m. What is the work done by the force? (A) 50 J (B) 100 J (C) 200 J (D) 400 J

2. A 10 kg block is lifted to a height of 2 m. What is the potential energy of the block? (A) 20 J (B) 40 J (C) 60 J (D) 80 J

3. A car travels 100 km in 2 hours. What is the average power of the car? (A) 50 kW (B) 100 kW (C) 150 kW (D) 200 kW

4. A ball is thrown vertically upwards with a velocity of 20 m/s. What is the maximum height reached by the ball? (A) 20 m (B) 40 m (C) 60 m (D) 80 m

5. A spring is compressed by 10 cm. What is the potential energy stored in the spring? (A) 0.5 J (B) 1 J (C) 2 J (D) 4 J

6. A 10 kg block is sliding across a frictionless surface at a speed of 20 m/s. What is the kinetic energy of the block? (A) 200 J (B) 400 J (C) 600 J (D) 800 J

7. A car engine produces 100 kW of power. How much work can the engine do in 1 minute? (A) 6000 J (B) 12000 J (C) 18000 J (D) 24000 J

8. 8. A 100 kg mass is lifted to a height of 10 m. What is the work done by the force? (A) 1000 J (B) 2000 J (C) 3000 J (D) 4000 J

   9. A 10 kg mass is moving at a speed of 10 m/s. What is the kinetic energy of the mass? (A) 100 J (B) 200 J (C) 300 J (D) 400 J

   10. A car engine produces 100 kW of power. How much work can the engine do in 1 hour? (A) 360000 J (B) 720000 J (C) 1080000 J (D) 1440000 J

   11. A ball is thrown vertically upwards with a velocity of 20 m/s. What is the velocity of the ball when it is 10 m above the ground? (A) 10 m/s (B) 15 m/s (C) 20 m/s (D) 25 m/s

   12. A spring is compressed by 10 cm. What is the force required to compress the spring? (A) 0.5 N (B) 1 N (C) 2 N (D) 4 N

   13. A 10 kg block is sliding across a frictionless surface at a speed of 20 m/s. If the block encounters a rough surface, how much work will be done by friction to bring the block to a stop? (A) 200 J (B) 400 J (C) 600 J (D) 800 J

   14. A car travels 100 km in 2 hours. What is the average speed of the car? (A) 50 km/h (B) 75 km/h (C) 100 km/h (D) 125 km/h

   15. A ball is thrown vertically upwards with a velocity of 20 m/s. How long will it take for the ball to reach its maximum height? (A) 2 s (B) 4 s (C) 6 s (D) 8 s

   16. A spring is compressed by 10 cm. If the spring constant is 200 N/m, what is the potential energy stored in the spring? (A) 0.5 J (B) 1 J (C) 2 J (D) 4 J

   17. A 10 kg block is sliding across a frictionless surface at a speed of 20 m/s. If the block encounters a rough surface, what is the force required to keep the block moving at a constant speed of 20 m/s? (A) 0 N (B) 20 N (C) 40 N (D) 60 N

   18. A car engine produces 100 kW of power. How much work can the engine do in 1 second? (A) 1000 J (B) 2000 J (C) 3000 J (D) 4000 J

   19. A 100 kg mass is lifted to a height of 10 m. If the mass is lifted in 2 seconds, what is the power of the force lifting the mass? (A) 50 kW (B) 100 kW (C) 150 kW (D) 200 kW

   20. A ball is thrown vertically upwards with a velocity of 20 m/s. What is the acceleration of the ball when it is at its maximum height? (A) 0 m/s^2 (B) 10 m/s^2 (C) 20 m/s^2 (D) 30 m/s^2