Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Forces and Motion
367 practice questions
Topics covered
Practice questions
141–145 of 145 · Easy
Question 141
5 marks · Easy
Answer and see the solution →A cyclist rides a bike along a straight road. At one point, the cyclist stops at a traffic light for 20 s, then cycles away at a steady speed for the next 60 s.
(a)[2 marks]Complete the table to show which of the following are scalar and which are vector quantities: speed, displacement, time, velocity.
Scalar or vector: Quantity Type (Scalar or Vector) Speed Displacement Time Velocity (b)[1 mark]State the SI units for (i) speed and (ii) time.
(c)[2 marks]Explain the difference between speed and velocity.
Question 142
4 marks · Easy
Answer and see the solution →A force of 10 N is applied to a box of mass 2 kg, causing it to slide across a smooth surface.
(a)[1 mark]State the formula linking force, mass, and acceleration.
(b)[2 marks]Calculate the acceleration of the box.
(c)[1 mark]What is the SI unit for force?
Question 143
5 marks · Easy
Answer and see the solution →A cart is pushed along a straight path. The following data was recorded:
(a)[2 marks]Write down the SI units for (i) speed and (ii) acceleration.
(b)[2 marks]The cart moves a distance of 8 m in 4 s at a constant speed. Calculate its speed.
(c)[1 mark]If the mass of the cart is 2 kg, what is its momentum at this speed?
Question 144
4 marks · Easy
Answer and see the solution →A small mass is released from rest and falls freely under gravity. The mass is 0.30 kg. (Assume air resistance is negligible and g = 10 N/kg.)
(a)[1 mark]State the unit of weight in the SI system.
(b)[2 marks]Calculate the weight of the mass.
(c)[1 mark]Explain why the velocity of the mass increases as it falls.
Question 145
2 marks · Easy
Answer and check →Which of the following is NOT a unit of momentum?
- A.kg m/s
- B.N
- C.g cm/s
- D.kg km/h