Physics Kinematics Level: High School
A block files past your dorm room window (which is 1m tall ) , taking 0.25 to pass . Assuming it was dropped , from what height (above your window) was the book dropped ?
Physics Kinematics Level: High School
At the scene of a highway collision , skid marks stretch out for 90 m away from the collision site . Assuming the deceleration of the of the vehicle was at least 6 m/s^2, estimate the speed of the car before the incident .
Physics Kinematics Level: High School
Projectile motion
You and a friend are taking a walk on a cliff with the ocean 20 m away from the bottom of the cliff . You regularly play baseball and know that the furthest you can throw a ball is 10 m . You throw a baseball-sized rock with all your might and it barely makes it to the water . You tell your friend that you can figure out the height of the cliff but he doesn’t believe you . How could you explain to your friend how to find the height of the cliff ?
Physics Kinematics Level: High School
Conservation of momentum
A 42.0 kg block of ice slides down a plane with an incline of 34 degree’s . Assume friction is negligible , What is the acceleration of the block down the incline ?
Physics Kinematics Level: High School
Projectile motion
A soccer player kicks a ball at an initial velocity of 9 m/s . A second player standing 4 ft away who is 3 ft tall nearly gets hit with the ball but luckily it just misses the top of his head . Please find the time of flight the ball was in the air before hitting the ground , Find the maximum height of the ball reached , the range the ball traveled , and the velocity of the ball at its mid-flight position .
Physics Kinematics Level: High School
Vector
A plane travels between 4 airports . First 150 mi 30 deg West of North , then 300 ml 45 deg East of North , and finally 200 mi due East .What is the total displacement as a Vector ?
Physics Kinematics Level: High School
Projectile Motion
A ball is thrown up @ V0 = 10 m/s (UP) from the roof of a 100 m high building . What height did the ball reach before it stopped and what is the time it took for the ball to reach the ground ?
Physics Kinematics Level: High School
A car accelerates from rest @ A =5 m/s2 for 2 seconds , then travels 50 m @ a constant speed . What is the total time and total distance ?
Physics Kinematics Level: High School
Distinguish between speed , velocity and acceleration . Explain the quantities in terms of falling objects ?
Physics Kinematics Level: High School
How long would it take an object dropped from the learning tower of Pisa (height 54.6 meters) to hit the ground . How fast was it traveling at the moment of impact ?
Physics Kinematics Level: High School
Define the term acceleration motion.Physics Kinematics Level: High School
Relative Velocity
A car is traveling along a straight , level road at 11 m/s . When the car is 150 meters from a railroad crossing , the driver of the car realize a train is approaching . He accelerates at 1.5 m/s square in an attempt to cross the tracks before the train , Which is 100 meters from the crossing and traveling at 14 m/s . Does the car make it across the tracks before the train ? Justify .
Physics Kinematics Level: High School
Circular motion
A marble is set spinning around the inside of a frictionless cone whose sides slope at an angle of 45 degree . The marble rotates steady in a horizontal circle of radius 80 mm . What is the frequency of rotation ?
Physics Kinematics Level: High School
Circular Motion
Two physics students , Joe and Willie , decided to fling balloons filled with M1 = 68.5 grams of ice water at coeds who are sun bathing on the roof of a sorority house two blocks east of the physics building at UC Berkley . Joe and Willie built a Trebuchet of the roof of the physics building . For the large Mass , M2, they has a solid lead sphere D2 = 20.7 cm in diameter. M1 was mounted so that its center mass is at a distance L1 = 4.27 M from the axis of rotation and M2 was mounted so that its center of mass was L2 = .238 M from the axis of rotation . Assume that the Trebuchet is loaded in the horizontal position , and that the balloon leaves the arm at the highest point of rotation . Ignore friction , the moments of inertia of arms , etc . A) Calculate the mass of the lead sphere M2 ? B) Calculate the maximum angular velocity achieved by the Trebuchet W mass ? C) Calculate the tangential velocity with which the balloon begins its flight Vt ?
Physics Kinematics Level: High School
Minnie Mouse (mass m1 = 48.7 g) has run to the top of a curved frictionless wedge (height H1 = .79 m) . She slides down the track makes a perfectly elastic collision with Mickey Mouse (mass M2 = 56.3 g) who is at rest . Mickey files off the table (height H2 = .921 M) above the floor and Minnie rebounds to the height H3 before she eventually falls off the table . A) How far from the edge of the table does Mickey land ? B) How high does Minnie rebound ? C) How far from the edge of the table does Minnie land ?