Question

In: Physics

A car is driving initially at a velocity of 24 m/s. It then changes speed to...

A car is driving initially at a velocity of 24 m/s. It then changes speed to a velocity of 30 m/s during a 2.7 s time period. How far did it travel during that time? Answer: 72.8 m

Solutions

Expert Solution

U = 24m/s

V = 30m/s

t = 2.7s

From V-U = at

=) a = (30 - 24)/2.7 = 6/2.7 = 2.22223m/s^2

Now from V^2 - U^2 = 2aS

=) S = (900 - 576)/2×2.22223 = 72.8m

=) S = 72.8m


Related Solutions

Driving in your car with a constant speed of 12 m/s, you encounter a bump in...
Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure. If the radius of curvature of the bump is r = 31 m, find the apparent weight of a 54-kg person in your car as you pass over the top of the bump. N
A 3-Kg toy car travelling initially with a speed of 20.0 m/s in the east direction...
A 3-Kg toy car travelling initially with a speed of 20.0 m/s in the east direction crashes into a 5.0 kg toy truck moving in the west direction 30.0m/s The velocity of the car right after the collision is 15.0m/s to the west. What is the velocity of the truck right after the collision.
A 1,270-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes...
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...
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...
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 car is traveling to the right with an initial speed of 20 m/s. The car...
A car is traveling to the right with an initial speed of 20 m/s. The car slows down to a stop in 25 seconds. What is the acceleration of the car?
An object is initially traveling at a velocity of 12 m/s. It then begins to change...
An object is initially traveling at a velocity of 12 m/s. It then begins to change it’s velocity according to the function ?=2.5?+3? v = 2 . 5 s + 3 a , where v is the velocity of the object, s is the objects position, and a is the acceleration. Determine the velocity of the object 30 meters after the velocity begins to change. (17.5 m/s)
Gayle runs at a speed of 4.17 m/s and dives on a sled, which is initially...
Gayle runs at a speed of 4.17 m/s and dives on a sled, which is initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 4.52 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 17.3 m? Gayle's mass is 52.8 kg, the sled has...
Gayle runs at a speed of 3.30 m/s and dives on a sled, initially at rest...
Gayle runs at a speed of 3.30 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 47.0 kg, the sled has a mass...
Gayle runs at a speed of 3.95 m/s and dives on a sled, initially at rest...
Gayle runs at a speed of 3.95 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 45.0 kg, the sled has a mass...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT