0 of 10 Questions completed
Questions:
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
0 of 10 Questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Average score |
|
Your score |
|
Pos. | Name | Entered on | Points | Result |
---|---|---|---|---|
Table is loading | ||||
No data available | ||||
In Fig 1.1 below, a stuntman on a motorcycle plans to ride up a ramp in order to jump over a number of cars. The speed of the motorcycle as it leaves the ramp is 14 ms-1 (Neglect air resistance throughout this question)
a) In Fig 1.2 below, the line OA represents the velocity of the motor cycle just as it leaves the ramp.
i) Explain why OA represents the velocity of the motorcycle and not just its speed (2)
ii) What is the scale used in Fig 1.2? (1)
b) Calculate the time interval between leaving the end of the ramp and reaching maximum height. (3)
c) The cars are each of width 1.6m and the same height as the ramp. Estimate the maximum number of cars which the motorcycle can jump for the take-off speed of 14 ms-1 (5)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
A stone is thrown from the top of a cliff at a height of 28 m above the sea. The stone is thrown at a speed of 25 ms-1 at an angle of 30° above the horizontal. (Air resistance is negligible.)
The maximum height reached by the stone from the point at which it is thrown is 8.0 m.
The stone leaves the cliff at time T = 0. It reaches its maximum height at T = TH and strikes the sea at T = Ts.
a) On the axis below, sketch a graph to show the variation in the magnitude of the vertical component of the velocity of the stone, from T = 0 to T = Ts. (3)
b) Calculate the time (T-total) it will take for the stone to hit the water. (7)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
Two students are 130 m apart. One holds a paint ball gun on the ground level and fires
a paint ball at the other. The ball leaves the gun at 40 ms-1 at an angle of elevation of
20°.
a) Calculate the maximum height of the paint ball above its firing position. (4)
b) Determine whether or not the ball hits the second student. (6)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
The image below shows a gun used during the first World War by the Germans to shell Paris.
The Paris Gun had the following specifications:
Range = 120 km. Time of flight = 3 minutes. (assume that the initial height and that of the target were both ground level, i.e. Δsy = 0.0 m)
a) Determine the maximum altitude that the projectile reached. 1 (2)
b) Determine the vertical and horizontal components of the projectile’s velocity as it struck the target. 2 (7)
c) Determine the muzzle velocity of the projectile. 2 (4)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
A United Nations plane travelling horizontally with a velocity of 120 ms-1, at an altitude of 320 m above the ground, drops a food parcel when it is directly above a small village. (Neglect air friction in your calculations.)
(a) Calculate the time for the parcel to reach the ground. (2)
(b) Calculate how far from the village the parcel will land. (2)
(c) Sketch a graph of the vertical displacement (y) of the parcel against the square of time (t2). Include the values where the line intercepts each axis.
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
An enemy ship was sailing 2km from the coast. A cannon on a 100-metre-high cliff fired a
projectile at an angle of 20° to the horizontal, at a speed of 150 m/s.
(a) Determine the vertical and horizontal components of the initial velocity. (4)
(b) Calculate the time taken for the cannon ball to reach the maximum height. (5)
(c) Calculate the maximum height of the cannon ball above the water. (4)
(d) Under the firing conditions stated does the cannon ball hit the enemy ship? Justify your response by using appropriate calculations and values. Show all working out. (9)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
The diagram below shows the trajectory of a projectile launched from the surface of the Earth. The projectile reaches its maximum high 4 seconds after launch and has an initial horizontal velocity 25 m s-1.
(a) Determine the maximum height reached by the projectile. (2)
(b) Calculate the velocity of the projectile. (3)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
A bomber travels at 300 km/hr above its desired target as shown below. At what distance before the target does the bomb have to be released in order to hit the target. Ignore air resistance in your calculations. (7)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
Henry spiked a volleyball at a Grammar boy that hit the boy on the top of the head. The boy was 1.8 metres tall and was standing 12 metres from Henry at the time. Henry hit the ball with a trajectory that was initially parallel to the floor. The contact height of Henry’s spike was 3.0 metres of the ground.
(NOT TO SCALE)
(a) Calculate the time of flight of the volleyball. (3)
(b) Calculate the initial velocity of the ball from Henry’s spike. (3)
(c) Calculate the momentum of the volleyball when it hit the Grammar boy (the mass of a volleyball is 226 grams). (3)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.
A projectile is launched at 60· to the horizontal from the top of a 34 metre cliff. The target is positioned 55m away from the base of the cliff.
Calculate the magnitude of the required launch velocity such that the projectile strikes the target 34m below the launch height. (4)
This response will be awarded full points automatically, but it can be reviewed and adjusted after submission.