Question

A bike has an acceleration of 16 m per second square how much distance will it cover in 20 seconds after starting

Answer 1

u=0
a=20m/s2
t=20s
using v=u+at
v=0+20x20
v=40m/s

Now using v2=u2+2as
40x40=0+2x20xS
1600=40s
s=1600/40
s=40m

Therefore the bike travels a distance of 40m in 20 seconds

Answer 2

GIVEN:

• Acceleration (a) = 16 m/s²
• Time taken = 20 seconds
• Initial Velocity (u) = 0

TO FIND:

• What is the distance covered by the bike ?

SOLUTION:

Let the distance covered by the bike be 's' m

To find the distance covered by the bike, we use the second equation of motion

$\large\bf{\star \: s = ut + \dfrac{1}{2} at^2 \: \star}$

According to question:-

On putting the given values in the formula, we get

$\sf{\rightharpoonup s = 0 \times 20 + \dfrac{1}{2} \times 16 \times (20)^2}$

$\sf{\rightharpoonup s = 0 + \dfrac{1}{\cancel{2}} \times \cancel{16} \times 400}$

$\sf{\rightharpoonup s = 8 \times 400}$

$\bf{\star \: s = 3200 \: m \: \star}$

❝ Hence, the distance covered by the bike is 3200 m ❞

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✰ Extra Information ✰

➫ Distance = The actual length covered by the body with respect to time, it is called Distance.

➫ Speed = The rate of motion of a body along any direction is known as Speed.