A footballer kicks a stationary football. His foot is in contact with the ball for 0.050 s. The mass of the ball is 0.40 kg. The speed of projection of the ball is 25 m / s. What is the average force exerted on the ball by his foot? 0625_w20_qp_22 MCQ 2020 Paper 2, Variant 2 View
An electric train is initially at rest at a railway station. The motor causes a constant force of 360 000 N to act on the train and the train begins to move. State the form of energy gained by the train as it begins to move. The train travels a distance of 4.0 km along a straight, horizontal track. Calculate the work done on the train during this part of the journey. work done = The mass of the train is 450 000 kg. Calculate the maximum possible speed of the train at the end of the first 4.0 km of the journey. maximum possible speed = In practice, the speed of the train is much less than the value calculated in . Suggest one reason why this is the case. After travelling 4.0 km, the train reaches its maximum speed. It continues at this constant speed on the next section of the track where the track follows a curve which is part of a circle. State the direction of the resultant force on the train as it follows the curved path. 0625_s15_qp_33 THEORY 2015 Paper 3, Variant 3 View
Tractors have large tyres. These help to prevent the wheels from sinking into soft ground. tractor Which statement explains this? 0625_w23_qp_12 MCQ 2023 Paper 1, Variant 2 View
Why is it easier to push a sharp nail, rather than a blunt nail, into a piece of wood? 0625_w23_qp_13 MCQ 2023 Paper 1, Variant 3 View