Physics Kinematics Level: High School
One dimensional
A ball is thrown vertically upward with a speed of 25 m/s from a height of 2m off the ground .a) How high does it rise from the ground ?
b) How long does it take to reach its highest point ?
c) From the highest point , how many seconds does it take to reach the ground ?
d) Just before it hits the ground , how fast is the ball moving ?
e) Draw the vector difference between the ball’s initial velocity and its velocity 4 seconds later . Give the direction and magnitude for its difference .
Physics Kinematics Level: High School
Two dimensional
You are standing on the ground at the origin of a coordinate system . An airplane flies over you with constant velocity parallel to the x axis and at a fixed height of 7.60 x 10^3 at time t = 0 the airplane is directly above you , so that the vector leading from you to it is , P0 = (7.60 x 10^3 ) j . At t = 30.0 s the position vector leading from you to the air plane is P30 = (8.04 x 10^3 m) i + (7.60 x10^3 m)j . Determine the magnitude and orientation of the airplane position vector at t = 45.0 s .
Physics Kinematics Level: High School
One dimensional
A test rocket is fired vertically upward from a well . A catapult gives it an initial speed of 80.0 m/s at ground level . Its engineers then fire and it accelerates upward at 4.00 m/s^2 until it reaches an altitude of 1000 m . at that point its engines fall and the rocket goes into free fall , with an acceleration of -9.80 m/s^2 .a) How long is the rocket in motion above the ground ?
b) What is the maximum altitude ?
c) What is its velocity just before it collides with the earth ?
(you will need to consider the motion while the engine is operating separate form the free-fall motion )
Physics Kinematics Level: High School
One dimensional
A ball is dropped from rest from a height h above the ground . Another ball is thrown vertically upwards from the ground at the instant the first ball is released . Determine the speed of the second ball if the two balls are to meet at a height h/2 about the ground .
Physics Kinematics Level: High School
One dimensional
Ms . Fetters has just learned that she won the Presidential Award for Excellence in Science Teaching . She runs to the open window and throw her red marking pen into air with an initial upward speed of 5.00 m/s .a)If the window is 12.0 m above the ground , what is the velocity of the pen 1.0 s after it is thrown ?
b) How far has the pen fallen from its starting position after 2.0 s ?
c) How long does it take the pen to hit the ground ?
d) What is the pens velocity just before it hit the ground ?
Physics Kinematics Level: High School
One dimensional
Pepe , the clown is jumping on a trampoline as Babette , the tightrope walker , above him suddenly loses her balance and falls off the tight rope straight toward Pepe . Pepe has just started upward at 15 m/s when Babette begins to fall . Pepe catches her in midair after 1.0 s .a) How far has Babette fallen when she is caught by Pepe ?
b) What is Babette’s velocity at the time of contact ?
c) What is Pepe’s velocity at the time of contact ?
d) How far above the trampoline was Babette before she fell ?
Physics Force & Laws Of Motion Level: High School
Finally you are leaving Omaha to get a few days of fall break , but your car breaks down in the middle of nowhere . A tow truck weighing 4000 lbs comes along and agrees to tow your car , which weighs 2000lbs , to the nearest town . The driver of the truck attaches his cable to your car at an angle of 20 degrees to the horizontal. He tells you that his cable has a strength of 500 lbs . He plans to take 10 seconds to tow your car at a constant acceleration from rest in a straight line along the flat road until he reaches the maximum speed limit of 45 miles / hour . Can the driver carry out his plan ? You assume that rolling friction behave like kinetic friction , and the coefficient of rolling friction between your tires and the road is 0.10 .
Physics Kinematics Level: High School
Projectile
A basketball player is trying to make a half-court jump shot and release the ball at the height of the basket . Assuming that the ball is launched at 51.0 degrees , 14.0 m from the basket , what speed must the player give the ball ?
Physics Kinematics Level: High School
Projectile
Diving Diverse in Acapulco dive from a cliff that is 61 m high . If the rocks below the cliff extend outward for 23 m . What is the minimum horizontal velocity a diver must have to clear the rocks ?
Physics Kinematics Level: High School
Projectile
A pitched ball is hit by a batter at a 45 degree angle and just clears the outfield fence , 98 m away . If the fence is at the same height as the pitch , find the velocity of the ball when it left the bat . Ignore air resistance .
Physics Kinematics Level: High School
Projectile
Swimming you took a running leap off a high-diving platform . You were running at 2.8 m/s and hit the water 2.6 s later . How high was the platform and how far from the edge of the platform did you hit the water ? Ignore air resistance .
Physics Kinematics Level: High School
Projectile
A dart player throws a dart horizontally at 12.4 m/s . The dart hits the board 0.32 below the height from which it was thrown . How far away is the player from the board ?
Physics Kinematics Level: High School
Projectile
A toy car runs off the edge of a table that is 1.225 m high . The car lands 0.400 m from the base of the table .a) How long did it take the car to fall ?
b) How fast was the car going on the table ?
Physics Kinematics Level: High School
Projectile
You accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64-m high . How far from the base of the cliff should you look for the keys ?
Physics Kinematics Level: High School
Projectile
Suppose a football player kicks a successful field goal from a distance 36.6 m from the goalpost by giving a kick to the football on the ground at an angle of 40 degrees above the horizontal . Find the magnitude of the initial velocity of the football if it just clears the crossbar 3.05 m above the ground .