# physics

The figure shows the velocity of a solar-powered car as a function of time. The driver accelerates from a stop sign, cruises for 20 at a constant speed of 60 , and then brakes to come to a stop 40 after leaving the stop sign.

1. 👍 0
2. 👎 0
3. 👁 1,224
1. a) 1.7
b) -1.7
c) 0
d) 0

1. 👍 1
2. 👎 0
2. -1.7 b

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Math

Please help me!!! The table below represents the velocity of a car as a function of time: time Velocity seconds (m/s) x f (x) 15 45 22 66 29 87 36 108 The average rate of change of the function between x = 15 to x = 29 is

2. ### physics

several students are riding in bumper cars at an amusement park. the combined mass of a car A and its occupants is 250 kg. the combined mass of car B and its occupants is 200 kg. Car A is 15 m away from car B and moving to the

1) Two cars travel in the same direction along a straight road. The figure below shows the velocity, V, of each car at time t. Car B starts 3 hours after car A and car B reaches a maximum velocity of 40 km/hr. a. For approximately

4. ### physics help

At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must

1. ### Math

The table below represents the velocity of a car as a function of time: Time (hour) x Velocity (miles/hours) y 0 50 1 52 2 54 3 56 Part A: What is the y-intercept of the function, and what does this tell you about the car? (4

2. ### physics

a stunt car driver testing the use of air bags drives a car at a constant speed of 25m/s for a total of 100 meters. he applies his brakes and accelerates uniformlu to a stop just as he reaches the wall 50 meters away. SKETCH THE A

3. ### Physics

A Honda Civic travels in a straight line along a road. Its distance x from a stop sign is given as a function of time t by the equation x(t)= α t2− β t3, where α = 1.40m/s2 and β = 5.05×10−2m/s3 A) What is the average

4. ### Physics

The speed limit in a school zone is 40 km/h. A driver traveling at this speed sees a child run into the road 23 m ahead of hs car. He applies the brakes, and the car decelerates at a uniform rate of 8.0m/s^2. if the driver's

1. ### Calculus

1) A particle is moving along the x-axis so that its position at t ≥ 0 is given by s(t) = (t)In(2t). Find the acceleration of the particle when the velocity is first zero. 2) The driver of a car traveling at 50 ft/sec suddenly

2. ### Calculus - average velocity

*VELOCITY OF A CAR* Suppose the distance s (in feet) covered by a car moving along a straight road after t sec is given by the function s = f(t) = 2t^2 + 48t. a. Calculate the average velocity of the car over the time intervals

3. ### Physics

A driver of a car going 95 km/h suddenly sees the lights of a barrier ahead. It takes the driver 0.55 s before he applies the brakes (this is known as reaction time). Once he does begin to brake, he accelerates at a rate of -10.0

4. ### Physics

Figure 1 shows a red car and a green car that move toward each other. Figure 2 is a graph of their motion, showing the positions xg0 = 270 m and xr0 = -35.0 m at time t = 0 (time they intersect =12s). The green car has a constant