A 1000. kg remote-controlled stunt car traveling at 17.0 m/s
north collides with a 900. kg remote-controlled stunt car traveling
at 18.0 m/s east. What is the speed of the entangled cars
immediately after the collision? 7.2 m/s 7.7 m/s 10.2 m/s 12.4
m/s
A 1410-kg car moving east at 17.0 m/s collides with a 1880-kg
car moving south at 15.0 m/s, and the two cars connect
together.
a) What is the magnitude of the velocity of the cars right after
the collision? (m/s)
b) What is the direction of the cars right after the collision?
Enter the angle in degrees where positive indicates north of east
and negative indicates south of east. (°)
c) How much kinetic energy was converted to another form...
You shoot an arrow into the air at an initial velocity of
12.5m/s at an angle of 40º.
Find the maximum height the arrow reaches in the air.
Find the time it takes to reach its maximum height.
Find the time it takes to hit the ground. Assume its flight in
the air is symmetrical, with the first half of flight traveling
upward, and the 2nd half of flight traveling downward.
Find how far away it hits the ground.
A 1,270-kg car traveling initially with a speed of 25.0 m/s in
an easterly direction crashes into the rear end of a 9,100-kg truck
moving in the same direction at 20.0 m/s (see figure below). The
velocity of the car right after the collision is 18.0 m/s to the
east.
(a) What is the velocity of the truck right after the collision?
(Round your answer to at least three decimal places.)
(b) How much mechanical energy is lost in the...
A 1,165-kg car traveling initially with a speed of 25.0 m/s in
an easterly direction crashes into the rear end of a 8,300-kg truck
moving in the same direction at 20.0 m/s (see figure below). The
velocity of the car right after the collision is 18.0 m/s to the
east.
(a) What is the velocity of the truck right after the collision?
(Round your answer to at least three decimal places.)
(b) How much mechanical energy is lost in the...
A 1,215-kg car traveling initially with a speed of 25.0 m/s in
an easterly direction crashes into the rear end of a 8,100-kg truck
moving in the same direction at 20.0 m/s(see figure below). The
velocity of the car right after the collision is 18.0 m/s to the
east.
(a) What is the velocity of the truck right after the collision?
(Round your answer to at least three decimal places.)
=______ m/s (east)
(b) How much mechanical energy is lost...
A .5 kg air puck moves to the right at 3 m/s, colliding with a
1.5kg air puck that is moving to the left at 1.5 m/s.
1. Determine the direction and speed of the pucks' motion if
they stick to each other after the collision.
2. Suppose instead that the pucks do not stick together. If the
1.5kg puck moves to the right at .231 m/s after the collision, was
the collision elastic? Provide evidence!
3. Determine the size...
Mario, a hockey player, is skating due south at a speed of 6.35
m/s relative to the ice. A teammate passes the puck to him. The
puck has a speed of 8.09 m/s and is moving in a direction of 22.0 °
west of south, relative to the ice. What are (a) the magnitude and
(b) direction (relative to due south) of the puck's velocity, as
observed by Mario?
You throw a ball straight up with an initial velocity of 17.0
m/s. It passes a tree branch on the way up at a height of 9.50 m.
How much additional time will pass before the ball passes the tree
branch on the way back down?
Give your answer in seconds.
Part 1: A cart with mass 0.30 kg and velocity
0.10 m/s collides on an air-track with a cart with mass 0.40 kg and
velocity -0.20 m/s. What is the final velocity in m/s of the two
carts if they stick together? vf=
Part 2: What is the maximum height y that the
pendulum can reach in this experiment? a) L
b) y0-L c)0.3m
d) y0+L e)
y0f)0.2m
Part 3: A pendulum has a length of L = 1.0 m...