問 1
1 点Which of the following physical quantities is a vector quantity?
Pearson Edexcel GCSE (9-1) · Physics (1PH0)
Speed, acceleration and equations of motion：練習問題
その場で採点される選択問題 5 問と、解説つきの記述問題 5 問。すべて「Speed, acceleration and equations of motion」からの出題です。
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問 2
1 点A car of mass \(1200\text{ kg}\) is travelling at a constant velocity. A resultant force of \(3000\text{ N}\) is applied to the car in the direction of its motion. Calculate the acceleration of the car.
問 3
1 点A rocket of mass \(2000\text{ kg}\) is launched vertically. Its engines produce a constant upward thrust of \(25000\text{ N}\). Calculate the acceleration of the rocket at the moment of launch.
(Assume \(g = 10\text{ N/kg}\))
問 4
1 点A student observes a car moving along a straight road. The car travels a distance of \(450\text{ m}\) in a time of \(30\text{ s}\). Calculate the average speed of the car.
問 5
1 点An object is moving in a circular path at a constant speed. Which of the following statements is incorrect regarding its motion?
問 6
2 点A car travels a distance of 1500 metres in 60 seconds. Calculate the average speed of the car.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 7
3 点A runner accelerates from rest to a velocity of \(6\text{ m/s}\) in a time of \(3\text{ seconds}\). Calculate the acceleration of the runner.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 8
6 点A resultant force of \(20\text{ N}\) acts on an object of mass \(4\text{ kg}\) for \(5\text{ seconds}\). Calculate the change in momentum of the object.
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 9
4 点A delivery van travels along a straight road. It travels at a constant speed of \(12\text{ m/s}\) for \(20\text{ seconds}\) and then accelerates uniformly to a speed of \(18\text{ m/s}\) over the next \(10\text{ seconds}\).
(a) Calculate the distance travelled by the van while it was moving at a constant speed.(b) Calculate the acceleration of the van during the final \(10\text{ seconds}\).
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 10
5 点A ball is thrown vertically upwards with an initial velocity of \(15\text{ m/s}\). Ignore air resistance. Use \(g = 10\text{ m/s}^2\).
(a) Calculate the time it takes for the ball to reach its maximum height.(b) Calculate the maximum height reached by the ball.
(c) Sketch a velocity-time graph for the ball from the moment it is thrown until it returns to its starting position. Describe the gradient of this graph.
まず自分で答えを書いてから、解説と照らし合わせましょう。
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