Acceleration

Question 1

What is a vector quantity which describes how velocity changes with time?

Answer 1

Acceleration

Question 2

Is velocity changing in acceleration by either increasing or decreasing?

Answer 2

TRUE

Question 3

Where does this unit belongs to (m/s^2)?

Answer 3

The SI unit of Acceleration

Question 4

When an object slows down, what is it called?

Answer 4

Deceleration

Question 5

What is the formula corresponding to average acceleration?

Answer 5

a = velocity/time or a = final velocity - initial velocity/ final time - initial time.

Question 6

A particle traveling at 18 km/h speeds up to 72 km/h over the course of 10 seconds. What is the average acceleration of the particle during this time interval?

Answer 6

Solution:

Question 7

.
A car moves with a velocity of 50 m/s. Then suddenly the driver presses the accelerator paddle and the car reaches the destination point in 30 seconds. The velocity of the car at the destination point is found to be 100 m/s. What is the average acceleration of the car during this journey?

Answer 7

Solution:

Question 8

Find the average acceleration of the proton if the proton accelerates from rest to 36000 m/s in 1200 seconds.

Answer 8

Show your solution.

Question 9

What is an acceleration at a specific instant in time?

Answer 9

Instantaneous Acceleration

Question 10

What is the corresponding formula for Instantaneous?

Answer 10

a(t) = d/dt v(t)

Question 11

A particle moves along a straight line such that its displacement at any time t is given by s=t^3−6t^2 +3t+4 meters. The velocity when the acceleration is zero is:- ?

Answer 11

Solution.

Question 12

Velocity of a particle varies as -
v=2t^3−3t^2 in km/hrs.
If ;t=0 is taken at 12:00 noon, t is in hrs
Find the time between 12:00 noon and 1:00pm at which speed is maximum.

Answer 12

Solution

Question 13

When we say the rate of change in velocity; the change in velocity over time what does is it mean?

Answer 13

Average Acceleration