17
7. You throw a ball against a wall and the ball bounces back toward you with the same speed as it
had before it hits the wall. Does the velocity of the ball remain the same as the speed?
8. Suppose in an unidentified system of measurement the distance/velocity is measured by the unit
J and time by K
A. What would the unit of speed be in this system?
B. What would the unit of velocity be in this system?
C. What would the unit of acceleration be in this system?
9. Two cars A and B are moving with constant velocities v and 2v respectively at a certain amount
of time. During this time interval, which car A or B is moving with greater acceleration?
Part3: Multiple Choices
1. Which is a vector quantity?
A.
B.
C.
D.
Speed.
Displacement.
Distance.
Mass.
2. When a quantity is multiplied or divided by one, the value is
A.
B.
C.
D.
Increased.
Decreased.
Unchanged.
None of the above.
3. The unit m/s2 is for
A.
B.
C.
D.
Velocity
Speed
Instantaneous speed
Acceleration
4. Displacement
A.
B.
C.
D.
Is a measurement of mass
Is a measurement of time
Can be described only with a number
Showing direction and distance
5. Temperature is
A. A vector quantity.
B. A scalar quantity.
C. Neither a vector nor a scalar.