Question

answer the question with explanation and I'll mark you as a brainliest and if you answer me with random things I'll report you :)

Answer 1

Answer:

yes.

Explanation:

the direction is changing therfore the acceleration and velocity will also change (they are vector quantities)

the speed will remain the same however (being a scalar quantity)

Answer 2

Answer:

• Acceleration = 3 m/s²
• Time = 1.2 sec
• Final Velocity = 5 m/s
• Initial velocity = ?
• When the tractor turned the it had a constant speed then did it accelerate?

$\displaystyle\underline{\bigstar\:\textsf{According to the given Question :}}$

• So here we may find the Initial Velocity with the help of the the first equation of motion as we are given the final velocity, time and the acceleration of the body!!

$\displaystyle\sf :\implies v = u+at$

$\displaystyle\sf :\implies 5 = u+3\times 1.2$

$\displaystyle\sf :\implies 5 = u+3.6$

$\displaystyle\sf :\implies 5-3.6 = u$

$\displaystyle\sf :\implies \underline{\boxed{\textsf {\textbf{Initial Velocity = 1.4 m/s}}}}$

• When the tractor was turning it is said that it didn't accelerate and maintained a uniform velocity so it of course won't accelerate as there was no change in the initial and the final velocity of the body and if it had accelerated then there would have been a change in the speed of the tractor but we can't see that here
• We may even prove it using the same first equation of motion, say the time taken was 2 seconds maybe, you May use 3,4,5 or anything doesn't matter and the initial and the final velocity br 1.4 m/s

$\displaystyle\sf \dashrightarrow v = u+at$

$\displaystyle\sf \dashrightarrow 1.4 = 1.4+a\times 2$

$\displaystyle\sf \dashrightarrow 1.4-1.4 = 2a$

$\displaystyle\sf \dashrightarrow 0 = 2a$

$\displaystyle\sf \dashrightarrow \dfrac{0}{2} = a$

$\displaystyle\sf \dashrightarrow \underline{\boxed{\textsf{ \textbf{ Acceleration = 0 m/s}}}}$