Physics 9702/22 — October/November 2018

Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme

questions

marks

minutes

Topics Physical Quantities and Units · Dynamics · Forces, Density and Pressure · Superposition · Electricity · Kinematics · +4 more

Q1Physical Quantities and UnitsKinematicsWork, Energy and PowerDynamicsFree sample

A golfer strikes a ball so that it leaves horizontal ground with a velocity of $6.0\ \text{m s}^{-1}$ at an angle $\theta$ to the horizontal, as illustrated in Fig. 1.1.

Fig. 1.1

The magnitude of the initial vertical component $v_Y$ of the velocity is $4.8\ \text{m s}^{-1}$ .
Assume that air resistance is negligible.

(a)

Show that the magnitude of the initial horizontal component $v_X$ of the velocity is $3.6\ \text{m s}^{-1}$ .

(b)

The ball leaves the ground at time $t = 0$ and reaches its maximum height at $t = 0.49\ \text{s}$ .

On Fig. 1.2, sketch separate lines to show the variation with time $t$ , until the ball returns to the ground, of

Fig. 1.2

(i)

the vertical component $v_Y$ of the velocity (label this line Y),

(ii)

the horizontal component $v_X$ of the velocity (label this line X).

(c)

Calculate the maximum height reached by the ball.

maximum height = ______ $\text{m}$

(d)

For the movement of the ball from the ground to its maximum height, determine the ratio

\frac{\text{kinetic energy at maximum height}}{\text{change in gravitational potential energy}}

ratio = ______

(e)

In practice, significant air resistance acts on the ball. Explain why the actual time taken for the ball to reach maximum height is less than the time calculated when air resistance is assumed to be negligible.

The rest of this paper

7 more questions

Q2Physical Quantities and Units · Forces, Density and Pressure6M
Q3Dynamics · Forces, Density and Pressure11M
Q4Waves · Superposition7M
Q5Superposition5M
Q6Electricity · D.C. Circuits9M
Q7Electricity4M
Q8Particle Physics6M

Loading the full paper…