Physics MCQ Assessment

1. The acceleration of free fall on a particular planet is 8.0 m s-2. An object was dropped from rest and hit the ground after 1.5 s.

Air resistance is negligible.

From what height was the object dropped?

2. The diagram shows the speed-time graph of a moving object over a period of 50 s.

What is the average speed of the object when it is decelerating?

3. A box of mass 2.0 kg is pushed along a 12 m ramp with a force F of 15.0 N and accelerates from point P to point Q. The speed of the box is 2.0 m / s at P and the average frictional force acting on the box is 4.0 N throughout the motion. The gravitational field strength is 10 N / kg.

What is the speed of the box at point Q?

4. A block of wood of mass 2.0 kg is pushed along the horizontal flat surface of a bench with a force of 4.0 N. It moves at constant speed. When the pushing force is increased to 12 N, what is the acceleration of the block?

5. The graph shows the total resistive force that acts on a car of mass 830 kg over a period of time. The car is at rest at t = 0 s. A constant driving force of 2500 N acts on the car from t = 2 s to t = 24 s.

Which statement is incorrect?

6. Alex is jogging at constant speed beside a road. He sees the traffic lights in front of him turn amber, so he begins to jog at a lower constant speed. Which distance-time graph illustrates Alex’s motion?

7. A rubber ducky is released from the bottom of a pool of water. Almost immediately, it rises at a constant speed to reach the surface of the water. Which of the following best describes the resultant force acting on the rubber ducky?

8. Which of the following correctly describes an action-reaction pair of forces?

1. n an experiment, smoke particles are suspended in air and viewed through a microscope. The smoke particles undergo jerky random motion.

Which statement is correct?

1. A uniform metre rule is supported by vertical wires P and Q and remains horizontal as shown in diagram 1. The tension in each wire is 1 N. When a weight of 4 N is hung from the metre rule at the position as shown in diagram 2, the tension in Q becomes 2.3 N while the metre rule remains horizontal.

What is the distance d of the weight 4 N from end P?

1. The diagram shows two buoys P and Q sitting on a pond. A wave moves across the pond from left to right.

At the moment shown, buoy Q is at the crest and buoy P is at the trough. Which row describes the movement of the buoys during the next cycle of the wave?

2. A water wave moves from deep water to shallow water. Its speed decreases in shallow water. Which statement correctly describes the frequency and wavelength of the wave in the shallow water?

1. Which process(es) of thermal energy transfer require a medium?

2. A hot metal plate is placed near to a cold metal plate.

Which row shows the colour for the hot plate and for cold plate that causes the temperature of cold plate to increase most slowly?

1. A gas supply is connected to a mercury barometer. The same gas supply is then connected to a water barometer.

The density of mercury is 13 600 kg / m3 and the density of water is 1000 kg / m3. What is the value of h?

2. The diagram below shows a simple mercury barometer that has been correctly constructed. At which point in the mercury column is the pressure equal to 10 cm Hg less than the atmospheric pressure?