Paper 4 H - SAMPLE SET 1 Q4
4) This question is about forces, quantities and vectors.
4.1) Write down the equation that links gravitational field strength, mass and weight. [1 mark]
4.2) A small ball weighs 1.4 N.
gravitational field strength, g = 9.8 N/kg
Calculate the mass of the ball. [3 marks]
4.1) Write down the equation that links gravitational field strength, mass and weight. [1 mark]
4.2) A small ball weighs 1.4 N.
gravitational field strength, g = 9.8 N/kg
Calculate the mass of the ball. [3 marks]
Mass = __________ kg
4.3) A white ball with mass 143 g is moving at a velocity of 7.9 m/s.
It collides with a red ball with mass of 150 g.
The red ball is stationary before the collision. The white ball stops after the collision.
Calculate the velocity of the red ball after the collision.
Give your answer to two significant figures. [4 marks]
It collides with a red ball with mass of 150 g.
The red ball is stationary before the collision. The white ball stops after the collision.
Calculate the velocity of the red ball after the collision.
Give your answer to two significant figures. [4 marks]
Velocity of red ball = _________ m/s
4.4) The white ball is thrown high into the air.
After it is released the ball moves up and then back down in a vertical line.
The free body force diagram in Figure 6 shows the forces on the ball at one point in its flight.
The force arrows are drawn to scale.
After it is released the ball moves up and then back down in a vertical line.
The free body force diagram in Figure 6 shows the forces on the ball at one point in its flight.
The force arrows are drawn to scale.
Explain what is happening to the ball at this point in its flight. [4 marks]
(Total for Question 4 = 12 marks)
(Total for Question 4 = 12 marks)