HomeworkLib
Question

A speeding driver sees a police officer, hits her brakes, and changes her speed from 45...

A speeding driver sees a police officer, hits her brakes, and changes her speed from 45 MPH to 30 MPH in 1.4 seconds. What was her average acceleration (in m/s2) during this time?

science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
A speeding driver sees a police officer, hits her brakes, and changes her speed from 45...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A speeding driver sees a police officer, hits her brakes, and changes her speed from 45...

    A speeding driver sees a police officer, hits her brakes, and changes her speed from 45 MPH to 30 MPH in 1.4 seconds. What was her average acceleration (in m/s2) during this time? A unicorn running on a beach at 7 m/s changes speed at a constant rate of 3.8 m/s2 over a period of 3 seconds. What is the unicorn's velocity at the end of this time? A unicorn running on a beach at 8 m/s changes speed at...

  • A speeding driver with a constant speed of 90.0 km/h passes a stopped police car. The...

    A speeding driver with a constant speed of 90.0 km/h passes a stopped police car. The police car immediately takes off after him and accelerates with a constant acceleration of 5.0 m/s2. The time needed for the police car to overtake the speeding driver is closest to …

  • If the truck hits the deer 2.60 seconds after the driver slams on the brakes, what...

    If the truck hits the deer 2.60 seconds after the driver slams on the brakes, what was the speed of the truck, in km/h, when the deer was struck? Assume motion was at constant acceleration. Answer will be 3 sig figs. (Homework Assignment 1 (Chapter 2) Problem C2-04 Constants A truck is traveling at a constant speed of 56.3 km/h Suddenly, the driver sees a deer 23.6 m away and slams on the brakes

  • The driver of a car slams on the brakes when he sees a tree blocking the...

    The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of −5.40 m/s2 for 4.15 s, making straight skid marks 63.3 m long, all the way to the tree. With what speed (in m/s) does the car then strike the tree? m/s (b) What If? If the car has the same initial velocity, and if the driver slams on the brakes at the same distance from the...

  • A speeding car traveling 65 kph in a 45 kph zone passes a police officer pulled...

    A speeding car traveling 65 kph in a 45 kph zone passes a police officer pulled over at the side of the road. 2.50 seconds after the speeding cars passes the cop car, the officer begins accelerating 2.75 m/s^2. How long does it take for the police car to catch up to the speeding car?

  • 16) You are in the left lane (speeding) at 40 m/s when you notice a police...

    16) You are in the left lane (speeding) at 40 m/s when you notice a police car ahead of you traveling at 30 m/s (the speed limit). When you are 45 m apart you start decelerating at 1.0 m/s2. Will you pass the police car and get a ticket? 17) A car is traveling at 25.0 m/s approaching a bicyclist moving at 7.0 m/s in the same direction. There is 75 m between them when the driver hits the brakes....

  • Samantha is recklessly driving 60 mph in a 30 mph speed zone when she suddenly sees...

    Samantha is recklessly driving 60 mph in a 30 mph speed zone when she suddenly sees the police. She steps on the brakes and slows to 30 mph in three seconds, looking non-chalant as she passes the officer. Draw a motion diagram for her motion in this situation. For this assignment, follow the problem solving structure that the book introduced: Model, Visualize, Solve, Assess.

  • The driver of a car slams on the brakes when he sees a tree blocking the...

    The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of −5.00 m/s2 for 4.15 s, making straight skid marks 64.4 m long, all the way to the tree. With what speed (in m/s) does the car then strike the tree? i got 5.14 which is the the right answer but the second part im lost.. What If? If the car has the same initial velocity, and...

  • A police officer with a radar gun clocks a speeding car as traveling 74 km/h along...

    A police officer with a radar gun clocks a speeding car as traveling 74 km/h along a country lane. Assume that the police officer starts accelerating 5 seconds after the speeding car passes by and in order to catch up with the car. Assume the car travels at the same speed for 6 seconds, then slows down to 77 % of the original speed. What minimumacceleration will allow the officer to catch up with the car in 25 seconds? Express...

  • A truck is traveling at a constant speed of 56.6 km/h . Suddenly, the driver sees...

    A truck is traveling at a constant speed of 56.6 km/h . Suddenly, the driver sees a deer 24.0 m away and slams on the brakes. If the truck hits the deer 2.40 s after the driver slams on the brakes, what was the speed of the truck, in km/h, when the deer was struck? Assume motion was at constant acceleration.

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT