Question

A 1990 kg truck traveling north at 45 km/h turns east and accelerates to 56 km/h. (a) What is the change in the truck's kinetic energy? (b) What is the magnitude of the change in its momentum?

Answer #1

A 14,000 kg tractor traveling north at 21 km/h turns west and
travels at 26 km/h . Calculate the
a) change in the tractor's kinetic energy. I think it's 1.27 x
10^5 J
b) linear momentum (magnitude and direction). I think I got the
magnitude?? 8.22 x 10^5 kg m/s but how do I get direction?

A truck of mass 5000 kg was moving north at 45 km/h when it
collided with a car of mass 1250 kg moving east at 90 km/h. Find
the magnitude and direction of thre velocity of the vehicles after
the collision, assuming they became entangled and moved
together.

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 truck of mass 25947 kg is moving east at 63 km / h collides a
car of mass 1271 kg moving west at 92 km / h. The Collision is
completely inelastic and takes place on a frictionless road.
Determine the fractional loss of kinetic energy after the
Collision. Give an answer to one decimal place. Remember to add
unit% after the numerical value.

A car is traveling at 80 km/h on a highway and a truck is
traveling at 40km/h. can these vehicles have the same kinetic
energy? if so, what must be the ratio of their masses? pleadse show
how you get the answer. Thanks

A 1,900 kg vehicle traveling east on Anderson Avenue at 59.0
km/hr collides with a 3,800 kg vehicle traveling north across
Anderson Avenue at 21.0 km/hr. If they stick together on collision,
what is the magnitude and direction of their velocity just after
colliding?
__________ km/hr
__________ ° north of east.

A cameraman on a pickup truck is traveling westward at 25 km/h
while he videotapes a cheetah that is moving westward 28 km/h
faster than the truck. Suddenly, the cheetah stops, turns, and then
run at 50 km/h eastward, as measured by a suddenly nervous crew
member who stands alongside the cheetah's path. The change in the
animal's velocity takes 2.0 s. What are the (a) magnitude and (b)
direction of the animal’s acceleration according to the cameraman
and the...

A cameraman on a pickup truck is traveling westward at 19 km/h
while he videotapes a cheetah that is moving westward 35 km/h
faster than the truck. Suddenly, the cheetah stops, turns, and then
run at 48 km/h eastward, as measured by a suddenly nervous crew
member who stands alongside the cheetah's path. The change in the
animal's velocity takes 1.9 s. What are the (a) magnitude and (b)
direction of the animal’s acceleration according to the cameraman
and the...

Students in question are in the back of a 3200 kg moving truck
travelling east at 50 km/h. The students intend on ramming the
truck with their 2000 kg vehicle to force it to a stop. As the
moving truck moves through a nice open parking lot, they travel at
80 km/h directly southwest (50 degrees south of west) and collide
with the moving truck. Both vehicles become stuck together and move
off as one after the collision. Treat east...

A 1200-kg sportscar is heading east at 75 km/h toward the east
when it collides with a 3350-kg truck traveling south at 50 km/h
and they stick together upon collison. Both vehicles were
driverless cars, so nobody was injured in this collision. What is
the direction of motion of the wreckage after collision?

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