Physical Science Assessment Section 1

A baseball player swings his bat and hits a ball. According to Newton's third law of motion which of the following is a reaction to the bat's force on the ball?

• the ball's force on the bat

• the ball's force on the player

• the player's force on the bat

• the bat's force on the player

How long will it take a car to accelerate from 20 m/s to 26 m/s at a rate of 1.4 m/s²?

• 2.2 s

• 2.7 s

• 4.3 s

• 4.6 s

The table below shows the time it takes four cars to go from 0 to 60 km/h. Based on the information given, which of the following quantities can be compared for the four cars?

• stopping time

• stopping distance

• instantaneous speed

• average acceleration

The distance between Earth and the Moon was determined by measuring the time it took for light waves from Earth to travel to the Moon and back. Why was it not possible to use sound waves for this experiment?

• Sound waves must move through a substance

• Sound waves would change frequency on the return to Earth

• Sound waves move too slowly for the technique to be accurate

• Sound waves move more slowly in Earth's atmosphere than in space

Which statement best explains the energy transfer as the boy moves from Position 2 to Position 3?

• The boy's potential energy is transferred to the boy's kinetic energy

• The boy's kinetic energy is transferred to the boy's potential energy.

• The kinetic energy of the air molecules around the boy is transferred to the boy's kinetic energy.

• The boy's potential energy is transferred to the kinetic energy of the air molecules around him.

A cart at the top of a hill is released and rolls down the hill. Which of the following describes the energy of the cart just as it reaches the bottom of the hill?

• The cart has no energy

• The cart has maximum kinetic energy

• The cart has maximum gravitational potential energy

• The cart has equal gravitational potential and kinetic energy

In a competition, weightlifter 1 lifts a 100 kg weight from the floor. Weightlifter 2 also lifts a 100 kg weight to the same height above the floor, but takes a longer time to do so. Which of the following statements describes the work done and the power used by the weightlifters?

• Weightlifter 2 does the same work and uses less power compared with weightlifter 1

• Weightlifter 2 does the same work and uses more power compared with weightlifter 1

• Weightlifter 2 does less work and uses the same power compared with weightlifter 1

• Weightlifter 2 does more work and uses the same power compared with weightlifter 1

Which of the following actions would increase the current through a circuit component?

• decreasing the power in the component

• increasing the resistance of the component

• increasing the voltage across the component

• placing another identical component in series in the circuit

A substance is heated. Which of the following charts has true information?

• Kinetic Energy Increases, Temperature Increases, Volume Increases, Mass Decreases, Density Remains Constant

• Kinetic Energy Increases, Temperature Increases, Volume Increases, Mass Remains Constant, Density Decreases

• Kinetic Energy Decreases, Temperature Decreases, Volume Decreases, Mass Remains Constant, Density Increases

• Kinetic Energy Decreases, Temperature Decreases, Volume Decreases, Mass Increases, Density Remains Constant

For a substance to change phases, the amount of internal energy must change. Water exists in three phases: liquid, solid (ice), and gas (water vapor). Which of the following lists the phases in order of increasing total energy?

• A. solid, liquid, gas

• B. gas, liquid, solid

• C. solid, gas, liquid

• D. liquid, gas, solid