Question

I will mark you brainlist if you did this​

Answer 1

Answer :

➥ The final velocity of a trolley = 32 cm/s

Given :

➤ Acceleration of a trolley (a) = 4 cm/s²

➤ Time taken by a trolley (t) = 8 sec

To Find :

➤ Final velocity of a trolley (v) = ?

Solution :

We can Acceleration by using the first equation of motion which says v = u + at.

The trolley is on the inclined plane.

Therefore, we have Intial velocity of a trolley, Acceleration of a trolley and it's time taken by a trolley,

• Intial velocity of a right (u) = 0 cm/s
• Acceleration of a trolley (a) = 4 cm/s²
• Time taken by a trolley (t) = 8 sec

☃️ So let's find the final velocity of a trolley by using the formula:

From first equation of motion

→ v = u + at

→ v = 0 + 4 × 8

→ v = 0 + 32

→ v = 32 cm/s

║Hence, the final velocity of a trolley is 32 cm/s.║

$\:$

Some related equations :

⪼ v = u + at

⪼ s = ut + ½ at²

⪼ v² = u² + 2as

Where,

• v is the final velocity.
• u is the intial velocity.
• a is the acceleration.
• t is the time taken.
• s is the distance.

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Answer 2

$\star\:\:\:\bf\large\underline\blue{Given:—}$

➜ Initial velocity of the trolley, u = 0 (at the rest)

➜ Acceleration of the trolley , a = 4 cm/s²

= 0.04 m/s²

➜Time taken, t = 8 seconds

$\star\:\:\:\bf\large\underline\blue{To\:find:—}$

Velocity of the trolley (v) = ?

$\star\:\:\:\bf\large\underline\blue{Solution:—}$

As per first law of motion,we know that

$\boxed{\bf{\red{★v=u+at}}}$

➞ V = 0 + 0.04 × 8 m/s

➞ V = 0.04 × 8 m/s

$\boxed{\bf{\purple{V=0.32\:m/s}}}$

Therefore,the final velocity of the trolley

is 0.32 m/s

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