# physics

A bus moves from rest with a uniform acceleration of 2m/s(square) for the first 10s. It then accelerate at a uniform rate of 1m/s(square) for another 15s, it continues at constant speed for 70s and finally comes to rest in 20s by uniform deceleration.Draw the velocity time graph using the information above.

1. 👍
2. 👎
3. 👁
1. v(0)=0
v(10)=1/2 a t^2=1/2 *2*100=100m/s
so draw a straight line from 0,0 to 10,100
v(15)=100+1/2 a (t-10)^2 =100+ 1/2 (1)(25=125m/s
so plot the point (15,125)
then keep speed a constant horizontal line until time=70+15
plot the point (105, 125)
finally velocity at time125, v=0. Plot that point.

1. 👍
2. 👎
👤
bobpursley

1. 👍
2. 👎

## Similar Questions

1. ### physics

A car starts from rest and travels for 5.0 s with a uniform acceleration of + 1.5 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for 3.0 s, calculate (a) how fast

2. ### physics

A car starts from rest and travels for 6.0s with a uniform acceleration of 2.7m/s ^2. The driver then applies the brakes, causing a uniform acceleration of -2.0m/s^2. If the brakes are applied for 2.0s, determine each of the

3. ### Physics

Dahnay Travels On A Bus To School.He Gets On The Onthe Bus Which Then Accelerates From Rest To 18m/s In 20secnds.The Bus Travelr At This Velocity For 60seconds.Tge Bus Slows Down And Comesto Rest In 15seconds.Itis Stationary For

4. ### Physics

what is the instantaneous velocity of a free falling object 10s after it is released from a postion of rest? what is its average velocity during this 10s interval? how far will it fall during this time?

1. ### physics

A test car starts out from rest on a horizontal circular track of 80m radius and increases it's speed at a uniform rate to reach 27.78 m/s in 10s. Find the magnitude of the total acceleration of the car 8s after the start. Ok so I

2. ### physics

A car starts from rest and travels for 5.0 s with a uniform acceleration of +2.5 m/s2. The driver then applies the brakes, causing a uniform negative acceleration of -3.0 m/s2. If the brakes are applied for 2.0 s, how fast is the

3. ### Science

The graph below shows how the speed of a bus changes during part of a journey. 16. In segment 0-A, the bus is ___________ . Its speed changes from 0 to 10 m/s in 5 seconds. accelerating******** accelerating negatively at a

4. ### Physics

A body starts from rest and accelerates to a velocity of 5m/s in 20s. It then maintains this velocity for 10s and then decelerates to rest in further 10s. (a) Draw a velocity – time graph of the motion (b) Calculate the initial

1. ### Physics

A car starts from rest and travels for 7.0 s with a uniform acceleration of +3.0 m/s2. The driver then applies the brakes, causing a uniform acceleration of −2.5 m/s2. If the brakes are applied for 2.0 s, determine each of the

2. ### physics

A bus accelerates from rest at 1.5m/s^2 for 12s. It then travels for 25s after which it slows to a stop with an acceleration of magnitude 1.5m/s^2. (a) Find the total distance the bus travels And its average velocity of the trip.

3. ### Science

a bus moves from rest with a uniform acceleration of 2ms² for the first 10 seconds. it then accelerate at a uniform rate of 1ms² for another 15seconds. it continues at a constant speed for 70seconds and finally came to rest in

4. ### physics

A car starts from rest and travels for 6.0 s with a uniform acceleration of +2.4 m/s2. The driver then applies the brakes, causing a uniform acceleration of −1.0 m/s2. If the brakes are applied for 3.0 s, determine each of the