3 marksFoundation6.4.2.1 Radioactive decay and nuclear radiation
Alpha, beta and gamma are three types of nuclear radiation.
.1Which type of radiation is the most penetrating?
[1 mark] .2Which type of radiation is made of two protons and two neutrons?
[1 mark] .3Give a material that stops beta radiation.
[1 mark] 4 marksFoundation6.5.4.1.5 Acceleration
A motorbike accelerates from rest to 20 m/s in 8.0 s.
.1Calculate the acceleration of the motorbike.
[2 marks] .2Another bike accelerates at 4.0 m/s² for 3.0 s. Calculate its change in velocity.
[2 marks] 4 marksFoundation6.5.3 Forces and elasticity
A spring has an unstretched length of 12.0 cm. When a force is applied, its length becomes 15.0 cm. The spring constant is 30 N/m.
.1Calculate the extension of the spring in metres.
[2 marks] .2Calculate the force applied to the spring.
[2 marks] 4 marksFoundation6.5.4.3.1 Stopping distance6.5.4.3.2 Reaction time
A car travels at 13 m/s. The driver sees a hazard. The thinking distance is 9 m and the braking distance is 14 m.
.1Calculate the stopping distance.
[1 mark] .2Which of these increases the thinking distance?
[1 mark] .3Calculate the driver's reaction time.
[2 marks] 5 marksFoundation6.6.1.1 Transverse and longitudinal waves6.6.1.2 Properties of waves
The graph shows a wave on a rope at one instant.
036912151821242730−3−2−1123Distance in cmDisplacement in cm
.1Which of these is a longitudinal wave?
[1 mark] .2Use the graph to determine the amplitude of the wave.
[1 mark] .3Use the graph to determine the wavelength of the wave.
[1 mark] .4Describe the difference between a transverse wave and a longitudinal wave.
[2 marks] 