The driver of a car moving towards a rocket launching pad with a speed of 6 m / s observes that the rocket is moving with speed of 10 m / s. The upward speed of the rocket as seen by the stationary observer is

Question

The driver of a car moving towards a rocket launching pad with a speed of 6 m / s observes that the rocket is moving with speed of 10 m / s. The upward speed of the rocket as seen by the stationary observer is (A) 4 m s (B) 6 m s (C) 8 m s (D) 11 m s

Tardigrade Admin · Accepted Answer

Observed speed, v=√(10)2+(6)2 =√100+36=√136 ≈ 11 m / s

Q. The driver of a car moving towards a rocket launching pad with a speed of $6 m / s$ observes that the rocket is moving with speed of $10 m / s$ . The upward speed of the rocket as seen by the stationary observer is

4 m\s

6 m\s

8 m\s

11 m\s

Observed speed, $v = (10)^{2} + (6)^{2}$
$= 100 + 36 = 136 \approx 11 m / s$

Q. The driver of a car moving towards a rocket launching pad with a speed of 6m/s observes that the rocket is moving with speed of 10m/s. The upward speed of the rocket as seen by the stationary observer is