Question

a car initially at rest starts moving with a constant accelreration of 0.5m/s and travels a distance of 25m. find final velocity and time taken

Answer 1

✯Question✯

• A car initially at rest starts moving with a constant acceleration of 0.5m/s and travels a distance of 25m. Find the velocity and time taken?

✬Given✬

• Initial velocity (u) = 0m/s
• Acceleration (a) = 0.5m/s
• Distance travelled (S) = 25m

☆To find☆

• Final velocity (v)
• Time taken (t)

✮Solution✮

• From equation of motion:
• v² = u² + 2as
• v² = (0)² + 2(0.5)(25)
• v² = 25
• v = √25
• v = 5m/s

➺Final Velocity (v) = 5m/s

• From equation of motion:
• v = u + at
• 5 = 0 + 0.5(t)
• t = 5 ÷ 0.5
• t = 10s

➺Time taken (t) = 10s

                   

Answer 2

Answer:

Explanation:

u= 0

a= 0.5 m/s

s= 25m

v=?  t=?

$v^{2}$ - $u^{2}$ = 2as

$v^{2}$ = 2as + $u^{2}$

$v^{2}$ = 2as + 0

$v^{2}$ = 2* 0.5 * 25

$v^{2}$ = 25

v= 5m/s

t= $\frac{v-u}{a}$

t= 5-0/ 0.5

t= 5/0.5

t= 10s