Robert has just bought a new model roket, and is trying to measure its flight characteristics. The rocket engine package claims
1 answer:
You might be interested in
Answer:
Here is an image attached with similar questions.
The correct answer is D where acceleration is function of time.
Explanation:
The force acting on the object is constant.
There is no change in the application of forces.
And we know that Force is the product of acceleration and masses.
Newtons second law:
Regarding mass we know that it can neither be created nor destroyed.
So in we have two constant terms, constant divided by constant will give the same result as
There is no change in acceleration with respect to time
.
So the most appropriate graph where time (t) is changing on but acceleration doesn't changes is D.
The graph will be similar to and will be horizontal to the
.
Option D depicts the same.
Answer:
The time interval of acceleration for the bus is 2.20 seconds
Explanation:
Acceleration is the rate of change of velocity
→
where a is the acceleration, v is the final velocity, u is the initial velocity
and t is the time
The given is:
The uniform acceleration = -4.1 m/s²
The bus slows from 9 m/s to 0 m/s
We need to find the time interval of acceleration for the bus
Lets use the rule above
→ a = -4.1 m/s² , v = 0 m/s , u = 9 m/s
→
Multiply both sides by t
→ -4.1 t = -9
Divide both sides by -4.1
∴ t = 2.20 seconds
<em>The time interval of acceleration for the bus is 2.20 seconds</em>