a car starts from rest and accelerates at 3m/s2 until
it hits 30m/s and then coasts...
a car starts from rest and accelerates at 3m/s2 until
it hits 30m/s and then coasts at this constant velocity. How much
time does it take to complete a 450m trip?
A train starts from rest and accelerates uniformly with a = 2
m/s2 until it has traveled 1 km. The train then moves at
a constant velocity of 20 m/s for one hour. The train then slows
down uniformly at 0.05 m/s2, until it stops.
Calculate:
The maximum speed of the train
The total distance traveled by train.
An object starts from rest and accelerates at a rate of 2
rad/s2 until it reaches an angular speed of 23 rad/s.
The object then accelerates at a constant rate of a
rad/s2 until it stops. If the angular displacement is
193 rad, what is the angular acceleration a (in
rad/s2)?
A car starts from rest at a stop sign. It accelerates at 5.56
m/s2 for 6.56 seconds, coasts for 3.6 s, and then slows
down at a rate of 3.93 m/s2 for the next stop sign. How
far apart are the stop signs?
1) A car accelerates at 4 m /s / s. Assuming the car
starts from rest, how far will it travel in 10 s?
2) An object falls freely from rest on a planet where
the acceleration due to gravity is twice that of in Earth. Find the
speed of the object after 5 second?
3) It takes 8 seconds for a stone to fall to the bottom
of a mine shaft. How deep is the shaft?
4) A bag...
a). A prototype car starts from rest and accelerates at a
constant rate to 30 m/s in 5.6 seconds. How much distance did the
car travel during the 5.6-second accelerated motion?
b). A car was parked on the side of a hillside road at the top
of a hill. Unbeknown to the owner, its parking brake failed and
tremors from nearby construction set it in motion with negligible
initial speed down the hill. Assume the acceleration was constant
down the...
a). A prototype car starts from rest and accelerates at a
constant rate to 60 m/s in 4.1 seconds. How much distance did the
car travel during the 4.1-second accelerated motion?
b). A single-engine air plain starts its engine at one end of
the runway. It accelerates at a constant rate and takes off at 36
m/s after 29 seconds on the runway, just as it is running out of
runway. How long is the runway?
c). An object is...
An electric vehicle starts from rest and accelerates at a rate
of 2.4 m/s2 in a straight line until it reaches a speed
of 27 m/s. The vehicle then slows at a constant rate of 1.4
m/s2 until it stops. (a) How much time
elapses from start to stop? (b) How far does the
vehicle move from start to stop?
An electric vehicle starts from rest and accelerates at a rate
of 2.1 m/s2 in a straight line until it reaches a speed of 17 m/s.
The vehicle then slows at a constant rate of 1.1 m/s2 until it
stops. (a) How much time elapses from start to stop? (b) How far
does the vehicle move from start to stop? solve both a b show
units
A car starts from rest at a stop sign. It accelerates at 4.4
m/s^2 for 6.9 s, coasts for 2.3 s, and then slows down at a rate of
3.4 m/s^2 for the next stop sign. How far apart are the stop
signs?
A toy car starts from rest and accelerates on a straight road at
a rate of 3m/s^2 for 5 seconds. In the next 2 seconds, it continues
to move at a constant speed. Finally, it accelerates at a rate of
2m/s^2 until it stops in the rest of the rest of the time. Find
its
a.) Displacement
b.) Speed at t=6 seconds
c.) plot the following graphs:
I. x vs. t
II. v vs. t
III. a vs. t