physics

posted by .

The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the car. Calculate the acceleration of the car.

If you could also tell me how you came to the answer, it would help me in the future. Thank you.

• physics -

Force = mass x Acceleration

Rearrange the formula to
Acceleration = force/mass

acceleration = 10,000N/ 1250kg
acceleration = 8m/s^2

now remember this is an applied force to slow down the car (because the brakes are applied) therefore the car is not accelerating, it is decelerating.
you can write it as, the car is decelerating at 8m/s^2

double check with your teacher to write the answer in the format he wants (and to see if the questions is right) sometimes they tell you if ur wrong or right.

Also notice that N/kg = m/s^2

this is handy in future physics questions

Similar Questions

sue drives her 1452 kg car along a straight road at a constant velocity of 30 m/s [E]. Ger brakes suddently give out. she puts the car in neutral and lets it coast for 25 seconds. The air drag decelerates the car to a velocityof 25 …
2. Physics

A braking system is used to prevent the car travelling faster than 27 m s–1.The car and passengers shown in the diagram have a total mass of 750 kg. The length of track from P to Q is 80 m. Calculate the average braking force that …
3. Physic

Just an instant before reaching the very bottom of a semicircular section of a roller coaster ride, the automatic emergency brake inadvertently goes on. Assume the car has a total mass of 850 kg, the radius of that section of the track …
4. Physics

A CAR HAS A MASS OF 1200KG TRAVELLING ON A LEVEL ROAD. THE CAR DECELERATED AT A RATE OF 10M/S^2 TILL THE CAR STOPPED. iT HAS TO OVERCOME A TOTAL RESISTANCE OF 400N WHILE BRAKING. (I) CALCULATE THE BRAKING FORCE OF THE CAR (II) WHAT …
5. physics

Driving home from school one day, you spot a ball rolling out into the street (see the figure ). You brake for 1.00 , slowing your 970- car from 16.0 to 9.50 . What was the magnitude of the average force exerted on your car during …
6. physics

A racing car has a mass of 1250kg. when the brake pedal is pushed down a constant breaking force of 10 000 N is exerted on the car. Calculate the acceleration of the car.
7. physics

Each of the four wheels of a car push on the road with a force of 4.0*10^3 N [down]. The driving force on the car is 8.0*10^3 N [W]. The fictional resistance on the car is 6.0*10^3 [E]. Calculate the following A) the mass of the car …
8. physics

A racing car reaches a speed of 40 m/s. At this instant, it begins a uniform negative acceleration, using a parachute and a braking system, and comes to rest 5.0 s later. (a) Determine the acceleration of the car. (b) How far does …