A wheelbarrow is an example of which simple machine? O pulley
O lever
O screw
wheel and axel

If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?