Question

A car is traveling west at 22.5 m/s when it turns due south and
accelerates to 25.0 m/s, all during a time of 8.00 s. Calculate the
magnitude of the car's average acceleration (in
m/s^{2}).

Answer #1

On a horizontal road, a car is traveling West at a constant
speed of 11.4 m/s . After 16 s , it has rounded a corner and is now
heading North at a constant speed of 16.0 m/s .
What is the magnitude of the car's average acceleration during
this 16 s time interval?
0.29 m/s2
1.2 m/s2
0 m/s2
1.7 m/s2

On a horizontal road, a car is traveling West at a constant
speed of 7.60 m/s After 32 s , it has rounded a corner and is now
heading North at a constant speed of 12.9 m/s. What is the
magnitude of the car's average acceleration during this 32 s time
interval?

On a horizontal road, a car is traveling West at a constant
speed of 12.0 m/s. After 52 s, it has rounded a corner and is now
heading North at a constant speed of 22.8 m/s.
What is the magnitude of the car's average acceleration during
this 52 ss time interval?

My Notes
A motorist drives south at 20.0 m/s for 3.00 min, then turns
west and travels at 25.0 m/s for 2.40 min, and finally travels
northwest at 30.0 m/s for 1.00 min. For this 6.40 min trip, find
the following values.
(a) total vector displacement
m (magnitude) ° south of west
(b) average speed
m/s
(c) average velocity
m/s (magnitude) ° south of west

A car of mass 772 kg is traveling 26.4 m/s when the driver
applies the brakes, which lock the wheels. The car skids for 4.47 s
in the positive x-direction before coming to rest.
HINT
(a)
What is the car's acceleration (in m/s2)? (Indicate
the direction with the sign of your answer.)
m/s2
(b)
What magnitude force (in N) acted on the car during this
time?
N
(c)
How far (in m) did the car travel?
m

A car of mass 1,484 is traveling south at 39 km/hr when it
suddenly turns east and speeds up to 54 km/hr. What is the
magnitude of change in car's momentum?

A race car accelerates uniformly from a speed of 41.0 m/s to a
speed of 62.0 m/s in 5.00 s while traveling clockwise around a
circular track of radius 3.70 102 m. When the
car reaches a speed of 50.0 m/s, find the following.
(a) the magnitude of the centripetal acceleration
______ m/s2
(b) the angular speed
______ rad/s
(c) the magnitude of the tangential acceleration
____ m/s2
(d) the magnitude of the total acceleration
____ m/s2
Use the values from...

A race car accelerates uniformly from a speed of 32 m/s to a
speed of 63 m/s in 5.1 s while traveling counterclockwise around a
circular track of radius of 422 m. When the car reaches a speed of
46 m/s, find the magnitude of the total acceleration (centripetal +
tangential acceleration) in m/s2.

A police car is traveling at a velocity of 17.0 m/s due north,
when a car zooms by at a constant velocity of 44.0 m/s due north.
After a reaction time 0.500 s the policeman begins to pursue the
speeder with an acceleration of 6.00 m/s^2. Including the reaction
time, how long does it take for the police car to catch up with the
speeder?

A police car is traveling at a velocity of 19.0 m/s due north,
when a car zooms by at a constant velocity of 42.0 m/s due north.
After a reaction time 0.500 s the policeman begins to pursue the
speeder with an acceleration of 5.00 m/s^2. Including the reaction
time, how long does it take for the police car to catch up with the
speeder?

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