Mechanical Energy Problems In Physics -Multiple Choice Questions Quiz

Question 1: A ball is thrown vertically upward. At the highest point of its trajectory, its kinetic energy is:

(a) Maximum
(b) Minimum
(c) Zero
(d) Constant

Question 2: A roller coaster is at the highest point of its track. At this point, its potential energy is:

(a) Maximum
(b) Minimum
(c) Zero
(d) Constant

Question 3: A pendulum reaches its lowest point. At this point, its kinetic energy is:

(a) Maximum
(b) Minimum
(c) Zero
(d) Constant

Question 4: A block is moving with a velocity of 4 m/s. If its mass is doubled while its speed remains the same, how does its kinetic energy change?

(a) It becomes half.
(b) It becomes four times.
(c) It becomes double.
(d) It remains the same.

Question 5: A car is moving on a straight road. If it comes to a complete stop, what happens to its mechanical energy?

(a) It decreases.
(b) It increases.
(c) It remains the same.
(d) It becomes zero.

Question 6: A spring is compressed to half of its original compression. How does its potential energy change?

(a) It becomes half.
(b) It becomes four times.
(c) It becomes double.
(d) It remains the same.

Question 7: A stone is thrown vertically upwards. Neglecting air resistance, at the highest point of its trajectory, its total mechanical energy is:

(a) Maximum
(b) Minimum
(c) Zero
(d) Constant

Question 8: A skater is gliding on a flat surface. If the surface is frictionless, how does the skater's mechanical energy change as she glides?

(a) It decreases.
(b) It increases.
(c) It remains the same.
(d) It becomes zero.

Question 9: A ball is rolling down a hill. As it goes down, its potential energy:

(a) Increases
(b) Decreases
(c) Remains the same
(d) Becomes zero

Question 10: A block is at rest on the floor. What is its mechanical energy?

(a) Zero
(b) Non-zero
(c) Cannot be determined
(d) Depends on the mass of the block

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Total score: /10

Answer key:

Question 1: c

Question 2: a

Question 3: a

Question 4: c

Question 5: a

Question 6: a

Question 7: a

Question 8: c

Question 9: b

Question 10: a