You visited us 1 times! Enjoying our articles? Unlock Full Access!

Equations of Motion

A force of ...

Question

A force of $(7^i + 6^k)$ newton makes a body move on a rough plane with a velocity of $(3^j + 4^k) m s^{- 1}$ . The power in watt is

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

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

Open in App

Solution

The correct option is A 24
Given $F = 7 ˆ i + 6 ˆ k N$
$V = 3 ˆ j + 4 ˆ k m / s$

Power $P = F o r c e \times V e l o c i t y$
$P = F . V$
$= (7 i + 6 k) (3 j + 4 k)$
$= 24$ watts.

Suggest Corrections

Similar questions

(2^i -^j + 4^k) m s^{- 1}

(^i - 3^j + 2^k) N

¯ v = (5^i - 3^j + 6^k)

\to F = (10^i + 10^j + 20^k) N

(10^i - 3^j + 6^k)

100 g

(6^i - 5^j - 3^k)

(10^i - 2^j + 7^k) m

\to F = (20^i - 3^j + 5^k) N

\to v = (6^i + 20^j - 3^k) m / s .

5 k g

10 m s^{- 1}

2 s

10 m s^{- 1}

Join BYJU'S Learning Program