Register
2. A race car starts at 400 m/s and then stops in 20 seconds. Calculate acceleration. Acceleration=final velocity - initial velocity/ change in time A. -20 m/s2 B. 40 m/s2 C. 20 m/s2 D. 55 m/s2
137k views
2 votes
2. A race car starts at 400 m/s and then stops in 20 seconds. Calculate acceleration. Acceleration=final velocity - initial velocity/ change in time

A. -20 m/s2
B. 40 m/s2
C. 20 m/s2
D. 55 m/s2

User Sandeep Sudhakaran
by
5.3k points

1 Answer

0 votes
It is -20m/s2
400-0
————- = -20
20
User Arman Safikhani
by
5.5k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.8m questions

7.5m answers

Other Questions

How does the capacitance of a parallel plate capacitor change with the geometry of the capacitor?
Indy runs 2 kilometers every morning. She takes 2 minutes for the first 250 meters, 4 minutes for the next 1,000 meters, 1 minute for the next 350 meters, and 3 minutes for the rest. Cindy’s average speed
A space station that does not rotate cannot simulate gravity for its occupants. A)True B)False From within a rotating reference frame, the centrifugal force simulates gravity. A)True B)False On a rotating
Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.
the force is found by multiplying the mass of an object by velocity at which it travels. true or false
Link Copied!