IB Physics SL A 1 1 Position Velocity and Acceleration Questions

Interpret and sketch motion graphs, use gradients and areas, and determine velocity and acceleration from figures and data.

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: 3]

A ball of mass 0.250 kg is released from rest at time t=0, from a height H above a horizontal floor.

Figure for Question IB Physics SL A 1 1 Position Velocity and Acceleration Questions question 1 — IB Physics SL

The graph shows the variation with time t of the velocity v of the ball. Air resistance is negligible. Take $g=-9.80 \mathrm{~ms}^{-2}$ . The ball reaches the floor after 1.0 s .

(a)

Label the time and velocity graph, using the letter M , the point where the ball reaches the maximum rebound height.

[ 1 ]

M at $1.6 \mathrm{~s}$

(b)

State the acceleration of the ball at the maximum rebound height.

[ 1 ]

« $g=>9.80<\mathrm{ms}^{-2} \gg$

Marking guidance:

Accept 9.81, 10 or a plain "g" Ignore sign if provided.

(c)

Draw, on the axes, a graph to show the variation with time of the height of the ball from the instant it rebounds from the floor until the instant it reaches the maximum rebound height. No numbers are required on the axes.

[ 1 ]

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IB Physics SL A 1 1 Position Velocity and Acceleration Questions question 1

Question (a)

Question (b)

Question (c)