/50 Name:

PHYSICS 12 KINEMATICS TEST

M.C.= 2 marks each for answer only—choose BEST answer available

Written = Marks clearly specified. Clearly circle final answer.

Include MAG. & DIR. and free-body-diagrams as required.

Draw a smiley face on lower left of page three for a bonus mark.

All answers MUST include proper units. All derivations and formula MUST be shown.

1. Which of the following contains only two scalar quantities?

A. mass, force, speed, velocity B. displacement, impulse, velocity, speed

C. speed, displacement, mass, time, D. displacement, velocity, momentum, mass

2. A lost sailor heads 20o N of E at 4.0 km/hr. Unfortunately, a current of 3.3 km/hr sweeps due

south. What is the sailor’s ultimate velocity?

A. 1.4 km/hr @ 16o S of E B. 2.2 km/hr @ 50o S of E C. 4.2 km/hr @ 27o S of E D. 5.2 km/hr @ 40o S of E

3. A stunt man runs and jumps off of a 12 m building. His takeoff velocity is 11 m/s at an angle of

40o above the horizontal. Where does he land (dx)?

A. 17 m B. 19 m C. 21 m D. 23 m

4. Consider three points in the path of a certain projectile as shown in the diagram below.

What is the acceleration of the projectile at each of these points?

Acceleration (m/s2)

At X At Y At Z

A. +9.8 0 -9.8

B. +9.8 0 +9.8

C. -9.8 0 -9.8

D. -9.8 -9.8 -9.8

5. A water skier is being towed due East at 14 m/s but at the same time sliding due South at 8 m/s.

Calculate her relative velocity as seen from the shore.

A. 11.5 m/s @ 30o S of E B. 16.1 m/s @ 30o S of E C. 11.5 m/s @ 30o E of S D. 16.1 m/s @ 30o E of S

6. Examine the weirdo that rides his bicycle off a cliff as diagramed below. If the weirdo’s initial

velocity is 16 m/s, what is the weirdo’s time of flight?

A. 1.3 s B. 1.4 s C. 2.1 s

D. 3.3 s

7. A cannon shoots a cannonball at 360 m/s and an angle of 41o. What is the maximum height

achieved by the cannonball?

A. 6600 m B. 5500 m C. 3800 m D. 2800 m

8. Consider Dick and Harry and the two vectors representing their forces shown below.

Which of the following best represents vdick – vharry ?

A. B. C. D.

9.

A. Yes B. No C. Idunno D. Ilikkafisksalotta

10. Yellowknife lies in a direction due East of Whitehorse (approx). An airplane capable of flying 160

m/s experiences a wind of 90 m/s blowing South. What direction should the pilot aim to end up

heading due east?

A. 29o N of E B. 34o N of E C. 52o N of E D. 61o N of E

1. A cat, failing to understand the concept of ‘glass’, launches itself at a bird as shown in the

diagram below.

With what velocity(mag. & dir.) does the cat hit the window? /5 marks

2. A red car drives off a cliff at 26 m/s and strikes the ground with a speed of 34 m/s.

A. What is the vertical component of the car’s impact velocity? /2 marks

B. How high (dy) is the cliff? /3 marks

3. The current of 2.8 m/s flows in a certain river. A swimmer can swim at 3.4 m/s. At one point

in the river the distance across is 26.2 m, unfortunately, a waterfall is only 48 m downstream.

A. If the swimmer heads straight across will he suffer a nasty fall?(show proof) /3 marks

B. If the same swimmer understood the principles of vectors, at what angle upstream

would he aim in order to go straight across? /3 marks

4. A football is thrown (‘Hail Mary’ style) downfield by a quarterback, at 22m/s at an angle of 65o to the

horizontal. Find:

(a) total time in the air. /1 mark

(b) how high the football rises. /1 mark

(c) the location of the football after 2.5 seconds(dx,dy) /2 marks

(d) the velocity at impact. /1 mark

(e) the range of the football /1 marks

5. Examine the scenario of the daring ninja with flair attempting to catapult himself over a wall

and into a temple window 18m above the ground.

If the catapult can launch the ninja at 85 m/s at an angle of 28o, find:

a) the distance the catapult should be positioned /3 marks

b) maximum height of the ninja /2 marks

c) the final velocity of the ninja going through the window /3 marks