# Maths help

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#1
How would you answer this maths q?
A car is being driven at 20m/ s when the driver sees a child run into the road. The driver’s usual
reaction time is 0.70s, but this is doubled because the driver is tired. Once the driver applies the
brakes, the car is brought uniformly to rest in a further 3.3s. What is the total distance travelled
by the car between when the driver first sees the child to when the car stops?
0
4 weeks ago
#2
(Original post by Dhhdndjdjjdjd)
How would you answer this maths q?
A car is being driven at 20m/ s when the driver sees a child run into the road. The driver’s usual
reaction time is 0.70s, but this is doubled because the driver is tired. Once the driver applies the
brakes, the car is brought uniformly to rest in a further 3.3s. What is the total distance travelled
by the car between when the driver first sees the child to when the car stops?
Well given that the answer is 61, I'm going to say the answer is 61.
0
4 weeks ago
#3
(Original post by Dhhdndjdjjdjd)
How would you answer this maths q?
A car is being driven at 20m/ s when the driver sees a child run into the road. The driver’s usual
reaction time is 0.70s, but this is doubled because the driver is tired. Once the driver applies the
brakes, the car is brought uniformly to rest in a further 3.3s. What is the total distance travelled
by the car between when the driver first sees the child to when the car stops?
Divide it into two sections.
The first section the car is still travelling
The second section he has applied the brakes
Use your suvat equations to work out for both sections.
Last edited by GabiAbi84; 4 weeks ago
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