SPEED AND VELOCITY WORK POWER AND ENERGY - Practice Mode

1) What is the speed of a train of 80 metre long train passes a railway station platform of 120 metres length in 20 seconds?

30 km/hour 32 km/hour 34 km/hour 36 km/hour

Correct Answer: 36 km/hour

2) What is the formula for acceleration?

Metre/second Metre/second<sup>2</sup> Metre/minute Metre/hour

Correct Answer: Metre/second<sup>2</sup>

3) What is the unit of acceleration of an object?

Metre/second Metre/second<sup>2</sup> Metre/minutes Metre/minutes<sup>2</sup>

Correct Answer: Metre/second<sup>2</sup>

4) What is the acceleration of a car if the speed of the car has increased from 25 km per hour to 40 km per hour in one minute?

0.059 m/sec<sup>2</sup> 0.59 m/sec<sup>2</sup> 0.069 m/sec<sup>2</sup> 0.69 m/sec<sup>2</sup>

Correct Answer: 0.069 m/sec<sup>2</sup>

5) What is the retardation of a car moving with a velocity of 50 km/hr is brought to rest in 45 seconds?

0.40 m/sec<sup>2</sup> 0.30 m/sec<sup>2</sup> 0.20 m/sec<sup>2</sup> 0.10 m/sec<sup>2</sup>

Correct Answer: 0.30 m/sec<sup>2</sup>

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