A space probe travels through deep space at when its engine suddenly fires

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

50\,\text{kg}

space probe travels through deep space at

10\,\text{m/s}

when its engine suddenly fires, exerting a constant

200\,\text{N}

thrust in the direction of motion for exactly

1.5\,\text{s}

before shutting off. Other forces are negligible. Determine the probe’s speed

3.0\,\text{s}

after the engine has shut off.