9702/21/M/J/24 · question 1 of 2 in this topic

Question 2

2(a)1 mark

Define velocity.

Your answer

Suggested time: 2 min

2(b)(i)2 marks

A student throws a ball over a vertical wall of height h, as shown in Fig. 2.1.

The ball leaves the hand of the student at a height of 1.2 m above the horizontal ground. The ball has an initial velocity of 22 m s⁻¹ at an angle of 40° to the horizontal. The wall is a horizontal distance of 36 m from where the student releases the ball. Air resistance is negligible.

Determine the time taken for the ball to reach the wall.

Fig. 2.1 — see the question text for what it shows

Determine Work it out from what you are given or from the figure, and show how you got there.

Your answer

Suggested time: 3 min

2(b)(ii)1 mark

A student throws a ball with an initial velocity of 22 m s⁻¹ at an angle of 40° to the horizontal, from a height of 1.2 m above horizontal ground. Air resistance is negligible.

Calculate the vertical component u of the initial velocity of the ball.

Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.

Your answer

Suggested time: 2 min

2(b)(iii)3 marks

A student throws a ball over a vertical wall of height h. The ball leaves the hand of the student at a height of 1.2 m above the horizontal ground with an initial velocity of 22 m s⁻¹ at an angle of 40° to the horizontal. The wall is a horizontal distance of 36 m from where the student releases the ball. Air resistance is negligible. (The time to reach the wall was found in (b)(i) and the vertical component of initial velocity in (b)(ii).)

The ball just goes over the wall.

Calculate the height h of the wall.

Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.

Your answer

Suggested time: 5 min

9702/21/M/J/24Cambridge International AS & A Level Physics 9702 · May/June 2024 · Paper 2 variant 1 · sit the whole paper