Physics Final Reivew

What was the instantaneous velocity of the object at the end of the eighth second

0m/s

this is a graph that was dropped, considering that the graph goes through the orgin what was the starting velocity of the object

0m/s

A small boat travels 80 km north then travels 60 km east in 1 hour

140km/hr

What is the minimum acceleration is required if the plane must leave a runway length 950m

2.96m/s^2

A rock dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20m/s after falling 8 meters, what is the magnitude of the acceleration

25m/s^2

How long does it take Saturn to orbit the sun

30 years 6.37x10^6m

What is the total distance that the bug traveled between t=0.00s and t=20s

39.9cm

A landing airplane makes contact with the runway with a speed of 78.0m/s and moves toward the south

4.22m/s^2 north

At which time does the object reverse its direction of motion

5s

A projectile is fired form a gun and has initial horizontal and vertical components of velocity equal to 30m/s and 40m/s respectively

9.8m/s downward

A projectile is fired horizontally with an int=itial speed of 50m/s

9.8m/s^2

What is the minimum acceleration that the car must have at the tof of the track to remain in contact with the track

9.8m/s^2

A 1500 kg car travels at a constant speed of 22 m/s around a cirular track that has a radius of 85 m

A; the velocity of the car is changing

Same car... what is the magnitude of the acceleration of the car

Ac=5.7m/s^2

Which statement is true concerning the ball when it is at C, the highest poit in its trajectory

B; the ball's velocity is perpindicular to it's acceleration

Which statement is true concerning the ball when it is at C, the highest point in its trajectory

B; the ball's verlocity is perpendicular to its acceleration

A spaceship is in orbt around the earth at an altitude of 12,000 miles

C; the spaceship is in free fall and its floor cannot press upwards on the artonauts

In which segment of the graph does the object have the highest speed

DE

How much energy is dissipated in braking a 1000kg car to stop from an initial speed of 20m/s

KE=200,000J

A 40-kg block is lifted vertically 20 meters from the surface of Earth

PE=8000J

A car traveling 20m/s rounds a curve so that its centrpetal acceleration is 5m/s/s

R=80m

The kinetic energy of an 1100-kg truck is 4.6x10^5J

V=28.9m/s

Same boat... What is the boat's displacement for the one-hour trip

d=100km

Which of these is (are) zero when the ball has reached the maximum height

speed and velocity

Which expression determines the average speed of the truck between the points B and C

v=x/t