Question

Velocity-time $(v - t)$ graph of a particle moving in a straight line is as shown in the figure. The sign of acceleration in regions $OP, PQ, QR$ and $RS$ respectively are

• A. $+, +, -, -$
• B. $-, -, +, +$
• C. $-, +, -, +$
• D. $-, +, +, -$

Answer 1

Answer: (D)

Slope of velocity-time graph is acceleration
$OP →$ slope negative
$PQ →$ slope positive
$QR →$ slope positive
$RS →$ slope negative