# physics

A 605-kg racing car completes one lap in 14.3 s around a circular track with a radius of 40.0 m. The car moves at constant speed.
(a) What is the acceleration of the car?

(b) What force must the track exert on the tires to produce this acceleration?

1. 👍
2. 👎
3. 👁
1. a. C = pi*2r = 3.14 * 80 = 251.3 m = The
Circumference.

V = 251.3m/14.3s = 17.6 m/s.

a = (V-Vo)/t.
a = (17.6-0)/14.3 = 1.23 m/s^2.

b. F = ma = 60s * 1.23 = 743.6 N.

1. 👍
2. 👎
2. Correction:

b. F = ma = 605*1.23 = 743.6 N.

1. 👍
2. 👎

## Similar Questions

1. ### physics

racing on a flat track, a car going 32 m/s rounds a curve 56m in radius. what is the car's centripetal acceleration?

2. ### science

a runner training for a race times her 400 meter laps around a track. her times are lap 1 60 seconds, lap 2 57 seconds, lap 3 55 seconds and lap 4 53 seconds. what is her avaerage velocity in meters per second (m/s)?

3. ### physics

The combined mass of a race car and its driver is 600. kilograms. Traveling at a constant speed, the car completes one lap around a circular track of radius 160 meters in 36 seconds. A) Based on the given information, calculate

4. ### physics

A 905 kg test car travels around a circular track with a circumference of 3.25 km. If the magnitude of the force that maintains the car's circular motion is 2140 N, what is the car's tangential speed?

1. ### physics

A race car moving with a constant speed of 60 m/s completes one lap around a circular track in 50 s. What is the magnitude of the acceleration of the race car?

2. ### Math

A running track consists of two straight sections with semi-circular ends. If the straight sections measure 100 metres and one compete lap on the inside of the track measures 1/2 k, what is the distance x between the two

3. ### Physical science

A runner at a track meet completes exactly one lap around a 400 m track What’s the distance and The displacement

4. ### science

A runner completes one full lap around a 400 meter track. What is her displacement?

1. ### Physics

A race car completes a lap on a 1600 m long track with an average speed of 250 km/h. If the car's average speed on the first half of the track was 225 km/h, what was its average speed on the second half?

2. ### Physics

A car traveling on a flat (unbanked) circular track accelerates uniformly from rest with a tangential acceleration of 1.70 m/s2.The car makes it one quarter of the way around the circle before it skids off the track. Determine the

3. ### Math

Jess is running around a circular track, one lap every 40 seconds. Mackenzie is also running at a constant speed around the same track, but in the opposite direction. They meet every 15 seconds. How many seconds does it take

4. ### physics

a race car starts from rest on a circular track.the car increases its speed at constant rate at as it goes 2.75 times around the track.find the angle that the total acceleration of the car makes with the radius connecting the