4.
VI. POSTTEST
delaging the time, the impact of the fore
be reduce
Directions: Choose the letter of the correct answer.
1.
A 2,000 kg car is moving with a velocity of 5 m/s. What is its momentum?
A.
2,000 kg m/s
C.
B.
2,500 kg m/s
D.
5,000 kg m/s
10,000 kg m/s
2. A 1,500 kg car moves at a rate of 5 m/s to the right while another 2,000 kg car moves at same
rate in opposite direction and collides with the first car. If the two cars moved together as one
after collision, in which direction will it go?
A. in the direction of the first car because it has lesser momentum
B.
in the direction of the first car because it has greater momentum
C.
in the direction of the second car because it has lesser momentum
d. in the direction of the second car because it has greater momentum
3. How does an airbag help prevent damaging injury when a car meets an accident?
A.
B.
C.
Airbag prevents the driver from crushing his head on the steering wheel hardly.
Airbag prevents the driver from being thrown out of the windshield.
Airbag prevents the driver from being wounded by broken glasses.
D. Airbag prevents the driver from damaging the face.
What is the horizontal velocity of a projectile thrown at an angle of 60° if its initial velo
is 10 m/s?
A. 5 m/s
B.
10 m/s
C. 15 m/s
D. 20 m/s
