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Go Back problems with solutions Topic:Kinematics
I.D
Level
Problem
Problem Topic
282
High school
Acceleration is always in the direction :
a) of the displacement
b) of the initial velocity
c) of the final velocity.
d) of the net force.
e) opposite to the frictional force.
. . . continues
Kinematics
312
High school
A rock is catapulted at a 37 degree angle and speed of 14.3 m/s .
A). If launched from a cliff that is 23.3m above the ground, how much will the range be increased by launching from the cliff compared to launching from the ground ? ignoring air resistance)
B. For both the cliff and the ground launch, what speed and directi . . . continues
Kinematics
313
High school
a) If a runner accelerates (with constant value) from zero to 7.0 m/s in 10 minutes and then maintains that speed , how long does it take the runner to cover half of a 5 km race ?
b) If the runner stops to rest , and walker walks with a constant 2.0 m/s speed , how long is the runners rest time ? Assume the runner begins his rest at the half . . . continues
Kinematics
314
High school
A seagull flies at a velocity of 9.00 m/s^2 straight into the wind .
a) If it takes the bird 20.0 min to travel 6.00 km relative to earth , what is the velocity of the wind ?
. . . continues Kinematics
315
High school
A jet airplane flying over Cheyenne , Wyoming , has an air speed of 260 m/s in a direction 5 degrees south of west. It is in the jet stream , which is blowing at 45.0 m/s in a direction 20 degrees south of east . What is the velocity of the airplane relative to earth ?
. . . continues Kinematics
316
High school
The velocity of the wind relative to the water is crucial to sailboats . Suppose a sailboat is in an ocean current that has a velocity of 2.20 m/s in a direction 30 degrees east of north relative to the earth . It encounters a wind that has a velocity of 4.50 m/s in a direction of 50 degrees south of west relative to earth . What is the velocity of . . . continues Kinematics
317
High school
A projectile is given an initial velocity Vo at an angle above the surface of an incline , which in turn inclined at an angle above the horizontal . Calculate the range of the projectile , measured along the surface of the incline , from the launch point. What angle gives the maximum range , measured along the incline ?
. . . continues Kinematics
318
High school
If you can build a roller coaster to demonstrate acceleration can you build one in which the rider feels a lot of acceleration ? explain ? . . . continues
Kinematics
319
High school
If you add 2m/s to a cars starting speed would it increase the final speed by 2m/s ? should it ? explalin ? . . . continues Kinematics
320
High school
How much faster is a cars final speed if you double the gravitational acceleration ? . . . continues Kinematics
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