Physics Kinematics Level: High School
A swimmer bounces straight up from a diving board and falls feet first into a pool . She starts with a velocity of 4.0 m/s and her takeoff point is 1.80m above the pool . What is her velocity when her feet hit the water ?
Physics Kinematics Level: High School
A basketball referee tosses the ball straight up for the starting tip off. At what velocity must a basketball player leave the ground to rise 1.25 m above the floor in an attempt to get the ball ?
Physics Kinematics Level: High School
An express subway train passes through an underground station . It enters with an initial velocity of 22.0 m/s and decelerates at a rate of 0.150 m/s^2 as it goes through . The station is 210m long .a) If the train is 130 m long , when does the end of the train leaves the station ?
b) What is the velocity of the end of the train as it leaves the station ?
Physics Kinematics Level: High School
How much faster is a cars final speed if you double the gravitational acceleration ?
Physics Kinematics Level: High School
If you add 2m/s to a cars starting speed would it increase the final speed by 2m/s ? should it ? explalin ?
Physics Kinematics Level: 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 ?Physics Kinematics Level: 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 ?
Physics Kinematics Level: 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 the wind relative to the water ?
Physics Kinematics Level: 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 ?
Physics Kinematics Level: 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 ?
Physics Kinematics Level: 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-way point and ends his rest the instant the walker crosses the finish line .
Physics Kinematics Level: 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 direction will the rock hit the ground ?
Physics Kinematics Level: 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.