Derived Units

Q.

A car is travelling at a speed of 40 m/s. Find the distance covered in 2 seconds.

1. 70 m

2. 20 m

3. 80 m

4. 90 m

Q. Find the density of a box whose mass and volume are 100 kg and 25 $m^3$.

1. 5 kg/$m^3$
2. 6 kg/$m^3$
3. 1 kg/$m^3$
4. 4 kg/$m^3$

Q. Speed of 36 km/hr ___ Speed of 12 m/sec

1. is greater than
2. is less than
3. is equal to
4. cannot be compared

Q. If 500 grams of a gas occupies a volume of $100c{m}^3$, then its density is .

1. $5g/c{m}^3$
2. $1g/c{m}^3$
3. $50g/c{m}^3$
4. $10g/c{m}^3$

Q.

Calculate the time taken for a bullet to travel 8 km at a speed of 5000 m/s.

1. 6.1 seconds

2. 1.6 seconds

3. 1.5 seconds

4. 2.0 seconds

Q. The C.G.S. unit of density is ${\text{g cm}}^{-3}$.

1. True
2. False

Q. What is the SI unit of speed?

1. Metre per second
2. Metre second
3. Metre per second square
4. Metre