Physics Kinematics Level: High School
Projectile Motion
A projectile carrying a bomb is launched from the ground at an angle of 50 degrees . It accelerates from rest from the first 3 seconds at 3m/s^2 . At time t = 3 s the bomb drops to the ground , while the projectile continues to accelerate at 3m/s^2 . What is the vertical distance between the projectile and the bomb at the bombs initial impact with the ground ?
Physics Kinematics Level: High School
One dimension
A student had a normal reaction time of 0.760 sec . Due to self induced chemic impairment their reaction time is increased to 0.946 sec . Driving at 24.5 m/s they see a DWI checkpoint 50.0 m ahead . If breaking acceleration of the car is 10.0 m/s^2 . can they stop before the checkpoint ?
Physics Kinematics Level: High School
One dimension
A student rolls a ball down a ramp and measures the displacement andtime os fthe rolling ball . They plot a d/t2 graph and calculate the slope of the graph to be 3.64 m/s .a) How much time would it take the ball to roll 1.86 m ?
Physics Kinematics Level: High School
One dimension
A ball is thrown downward w/an initial velocity of 12.6 m/s from a height of 17.3 ma) How fast was it going when it is hit the ground ?
Physics Kinematics Level: High School
One dimension
An object thrown upward w/an initial velocity of 16.8 m/sa)After 2.00 sec . is it still going up , or is it going down .
b) How fast was it going when it hit the ground ?
Physics Kinematics Level: High School
Relative Motion
The water current in a river moves relative to the land with a velocity vwl, and a boat is traveling on the river relative to the current with a velocity vbw.1) How is the velocity of the boat relative to the land (vbl) related to vwl , and vbw ?
2) Assume that the boat travels with a speed of 4.0 km/h relative to the current and that the current moves due east at a speed of 2.0 km/h relative to the land . Determine the velocity of the boat relative to the land for each of the situations described in items 2-4 .
A) Suppose that both the boat and the water current moves in the same direction and that ht boat is moving twice as fast as the current . Draw a vector diagram to determine the velocity of the boat relative to the land , vbl .
B) Suppose that the boat travels in the opposite direction of the current and that the boat is moving twice as fast as the current . Draw a vector diagram to determine the velocity of the boat relative to the land , vbl .
C) Suppose that the boat travels in a direction perpendicular to the current and that the boat is moving twice as fast as the current . Draw a vector diagram to determine the velocity of the boat relative to the land , vbl .
Physics Vectors Level: High School
Projectile Motion
After the snowstorm , a boy and a girl decides to have a snowball fight. The girl uses a large slingshot to shoot to shoot snowballs travel with an initial velocity of V0 .1) In terms of the initial velocity, V0 , and the launch angle , theta, for what amount of time, delta t , will a snowball travel before it reaches its maximum height above the ground ? (Hint: Recall that Vf = 0 when an object reaches its maximum height.)
2) What is the maximum height , h, above the ground that a snowball reaches after it has launched ?
3) What is the horizontal distance , x , the snowball has traveled when it reaches its maximum height ?
Physics Vectors Level: High School
Vector Operations
Given the following scenario , calculate the x and y components of each golf shot.One of the holes on a golf course lies due east to the tee . A novice golfer flubs his tee shot so that the ball lands only 64 m directly northeast of the tee . He then slices the ball 30 degrees south of east so that the ball lands in a sand trap 127 m away. Frustrated , the golfer then blasts the ball out of the sand trap , and the ball lands at a point 73 m away at an angle 27 degrees north of east . At this point , the ball is on the putting green and 14.89 m due north of the hole . To his amazement , the golfer then sinks the ball with a single shot .
1) Use the algebraic formulas to find the x and y components of eah displacement vector .Shot 1-x component --------------- y component ---------------------
Shot 2-x component --------------- y component ---------------------
Shot 3-x component --------------- y component ---------------------
Shot 4-x component --------------- y component ---------------------
2) Find the total displacement (to the nearest meter) the golf ball traveled from the tee to the hole . Assume the golf course is flat . (Hint: Which component of each displacement vector contributes to the total displacement of the ball between the tee and the hole ? )
Physics Vectors Level: High School
Use the vectors which is shown at “click here” to answer the following questions . 1) Which vectors have the same magnitude ? 2) Which vectors have the same direction ? 3) Which arrows ,if any , represents the same vector ?
Physics Kinematics Level: High School
Projectile Motion
A baseball leaves the bat with a speed of 44 m/s at an 30 degrees above the horizontal . A fence is located at an horizontal distance 132 m from the point where the ball was stuck . At what height above the ground will the ball hit the fence . Assume the ball leaves the ground 1.0 m above ground level and neglect air resistance .
Physics Kinematics Level: High School
Projectile Motion
A rock is projected from the edge of the building with an initial velocity of 12.2 m/s at an angle 53 degrees above the horizontal . The rocks strikes the ground horizontal distance 25.0 cm from the base of a building . Assume the ground is level and the side of the building is vertical , How tall is the building ?
Physics Kinematics Level: High School
Projectile Motion
A place kicker kicks a football with a speed 25.0 m/s at an angle 50 degrees to the horizontal . What is the velocity of the football at the highest point in the trajectory . Neglect air resistance .
Physics Kinematics Level: High School
One dimension
A particle starts from rest at x = 0 and moves for 10 sec with an a = +2.0 cm/s squared . For the next 20 sec , the a = -1.0 cm/s squared . What is the position of the particle at the end of this motion in m ?
Physics Kinematics Level: High School
One dimension
A rocket initially at rest is fired vertically with an acceleration of 10 m/s^2 . At an altitude of .78 km , the engine of the rocket cuts off . What is the maximum altitude it achieves ?
Physics Kinematics Level: High School
Projectile motion
A bullet is fired horizontally on the moon at a velocity of 1200 m/s from a gun 2.0 meters above the surface . How far in meters will the bullet travel before it hits the ground ? The acceleration due to the moon’s gravity is 1.6 m/s and the average distance from the earth to the moon is 380,000 km .