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2021 HSC Question 6
A train has a total mass of 400 tonnes. It accelerates from rest to a speed of 25 m/s. What is the kinetic energy of the train at the speed of 25 m/s?
A. 125 × 103 J
B. 250 × 103 J
C. 125 × 106 J
D. 250 × 106 J
2021 HSC Question 22(c)
(c) An electric skateboard battery is rated at 0.078 watts at an operating voltage of 48 volts. 3 Marks
Calculate the capacity of the battery in amp hours, if it fully discharges in one hour of use. The power (P) is given by the formula
P = VI.
2020 HSC Question 23 (b)ii
In overcoming the resistance due to gravity, drag and rolling resistance, a rider applies a force of 500 N on the pedals. 2 Marks
This allows the rider to cover, in 5 seconds, a distance of 20 metres from the starting point.
How much power was produced by the rider?
2019 HSC Question 23(b)
An electric scooter is powered by a 12-volt rechargeable battery with a capacity of 18 Ah. 2 Marks
Calculate the energy stored in the battery. Use 1 Wh = 3600 J.
2018 HSC Question 21(c)
The self-driving vehicle has a mass of 1.5 tonnes and is travelling at 60 km/h. Calculate its kinetic energy. 3 Marks
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