Grade 11 Motion graph example
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A parachutist jumps from a plane 300 m above the ground and falls freely for 5.0s before opening her parachute, which decreases her speed to a constant 4.0 m/s over the next 5.0s until she reaches the ground. You are asked to draw the displacement-time, velocity-time, and acceleration-time graphs from when she leaves the plane until just before hitting the ground, with down as the negative direction and ignoring initial air resistance.
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Grade 11 Motion graph example
- 1. Graphing Example • A parachutist is 300 m off the ground when she jumps out of a plane. She falls for 5.0s before opening her parachute. The parachute causes her speed to decrease to a constant 4.0 m/s in 5.0 s until she reaches the ground. • You are required to draw the d-t, v-t, and a-t graph for this problem and calculate all required displacements, velocities, accelerations and times. Start your graphs at t = 0.0 s, when the person just leaves the plane and ending when she is just about to hit the ground. Let her position at t = 0.0s be at the origin of the d-t graph and let down be the negative direction . Ignore any initial air resistance and assume the parachutist only falls downwards and all accelerations have constant values.