IB Physics HL A 1 8 Projectile Components Questions

Practise IB Physics HL A.1.8 by analysing projectile components and applying trajectory constraints to multi-step problems.

Exam points

Describe and interpret position, velocity and acceleration in one-dimensional motion using equations, vectors and motion graphs.
Use gradients and areas on displacement–time and velocity–time graphs to determine motion quantities.

[Maximum number: 2]

A football player kicks a stationary ball of mass 0.45 kg towards a wall. The initial speed of the ball after the kick is $19 \mathrm{~m} \mathrm{~s}^{-1}$ and the ball does not rotate. Air resistance is negligible and there is no wind.

Figure for Question IB Physics HL A 1 8 Projectile Components Questions question 1 — IB Physics HL

The ball leaves the ground at an angle of $22^{\circ}$ . The horizontal distance from the initial position of the edge of the ball to the wall is 11 m . Calculate the time taken for the ball to reach the wall.

horizontal speed $=19 \times \cos 22$ « $=17.6 \mathrm{~m} \mathrm{~s}^{-1}$ »
$\text { time }=\ll \frac{\text { distance }}{\text { speed }}=\frac{11}{19 \cos 22}=>0.62 \ll \gg$

Marking guidance:

Allow ECF for MP2

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IB Physics HL A 1 8 Projectile Components Questions question 1