From a place where, g = 9.8 m $s^{- 2}$ , a stone is thrown upwards with a velocity of 4.9 m $s^{- 1}$ . The time taken by the stone to return to the earth is :

2 s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1 s

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

4 s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

8 s

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D 1 s
Given : $g = 9.8 m / s$
Initial speed of the stone $u = 4.9 m / s$
Time taken to return to the earth (or time of flight) $t = \frac{2 u}{g}$
$∴$ $t = \frac{2 \times 4.9}{9.8} = 1$ s

Suggest Corrections

Similar questions

30 m/s

g = 10 {m/s}^{2}

14 m s^{- 1}

g = 9.8 m s^{- 2}

25 m / s

g = 10 m / s^{2}

10 m s^{-} 1

9 m s^{-} 1

g = 9.8 m s^{-} 2,

10 m / s

4 m

g = 9.8 m / s^{2}

Join BYJU'S Learning Program