Question

The velocity of a body moving with a uniform acceleration of $2 \mathrm {~m} . / \mathrm { sec } ^ { 2 }$ is $10 \mathrm {~m} / \mathrm { sec }$ . Its velocity after an interval of 4 sec is

• A. $12 \mathrm {~m} / \mathrm { sec }$
• B. $14 \mathrm {~m} / \mathrm { sec }$
• C. $16 \mathrm {~m} / \mathrm { sec }$
• D. $18 \mathrm {~m} / \mathrm { sec }$

Answer 1

Answer: (D)

$18 \mathrm {~m} / \mathrm { sec }$

Answer 2

$v = u + a t = 10 + 2 \times 4 = 18 \mathrm {~m} / \mathrm { sec }$