A block of mass 5 kg is moving horizontally at a speed of 1.5 m/s. A perpendicular force

A Block Of Mass 5 Kg Is Moving Horizontally At Physics Question

A block of mass 5 kg is moving horizontally at a speed of 1.5 m/s. A perpendicular force of 5 N acts on it for 4 sec. What will be the distance of the block from the point where the force started acting?

Options

(a) 6 m
(b) 8 m
(c) 10 m
(d) 2 m

Correct Answer:

10 m

Explanation:

Horizontal distance,x=ut ⇒1.5 x 4 = 6m
Vertical distance,y=(1/2)at² = (1/2)(F/m)t²
Two motions are in mutually perpendicular directions. Net displacement = √(6²+8²) = √(36+64) =√100 = 10m.

Related Questions:

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  2. Which of the following pairs is wrong
  3. The value of n so that vectors 2i+3j-2k, 5i+nj+k and -i+2j+3k may be coplanar,will be
  4. Two solid discs of radii r and 2r roll from the top of an inclined plane
  5. When a spring is extended by 2 cm energy stored is 100 J. When extended further by 2 cm

Topics: Laws of Motion (103)
Subject: Physics (2479)

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