Physics Force & Laws Of Motion Level: High School
Newton’s Second Law
A force of 30 N , directed to the east , is applied to a stationary crate of mass 3 kg , Determine the acceleration of the crate .
Physics Waves And Oscillations Level: High School
Time Period
The pendulum of a clock swings back and forth , going from left to right in 3 seconds . What is the period of the pendulum ?
Physics Work,Power & Energy Level: High School
A child of mass 20 kilograms slides down a playground slide . At a particular instant , her speed is 2 m/s . What is the child’s kinetic energy ?
Physics Work,Power & Energy Level: High School
What is the gravitational potential energy of a ball of mass 1 kg when it is 5 meters above the ground ?
Physics Work,Power & Energy Level: High School
Power
What power is necessary for a forklift to lift a 40 kilogram box against the force of gravity at a speed of 2 m/s ?
Physics Work,Power & Energy Level: High School
Calculate the work done on a box that slides 2 meters along a horizontal surface under the application of a 30 Newton horizontal force .
Physics Kinematics Level: High School
Free Fall
A student drops a ball from the top of a building 20 meters high . What is the ball’s speed just before it hits the ground ?
Physics Work,Power & Energy Level: High School
Suppose the energy of an object is given in Joules by E = 5x^2 + 5x , where x is the position of the object . Determine the objects position (s) when E = 30 J .
Physics Work,Power & Energy Level: High School
Elastic P.E
If 20 Joules of energy are stored in a spring of spring constant k = 5 N/m , how is the spring extended ?
Physics Force & Laws Of Motion Level: High School
Tension in a String
A light fixture of mass 3 kg hangs from a wire . What is the tension in the wire ?
Physics Measurements Level: High School
What is the surface area of a box with sides of length 1 by 2 by 3 meters ?
Physics Vectors Level: High School
Resolution of Vector
A box sits on the ground with a rope attached to it . A child pulls on the rope with a force of 20 Newton’s, at an angle of 20 degrees above the horizontal. Determine the magnitude of the x and y components of the force .
Physics Vectors Level: High School
Resolution of Vector
A box is pulled up a 30 degree ramp , when it has moved 2 meters along the incline , what distance x has it moved in the horizontal direction , and what is its distance y above the horizontal ground ?
Physics Kinematics Level: High School
Projectile Motion
A baseball fallows the parabolic trajectory y = 11 x-x^2 m where x and y represent the horizontal and vertical distance in meters of the ball at a particular instant . Solve for the point where the ball lands .
Physics Vectors Level: High School
Determine the magnitude and direction (measured counterclockwise from the east ) of the displacement of a person who travels 3 kilometers east and then 4 kilometers north . (You should be able to sketch the situation)