1. The rate of change of the velocity of an object is:

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Chapter2: Kinematics
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Problem 30CQ: Consider the velocity vs. time graph of a person in an elevator shown in Figure 2.58. Suppose the...
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Questionl (ID motion)
1. The rate of change of the velocity of an object is:
a) Distance.
2. The SI units for velocity is:
a) km/h.
c) velocity.
d)displacement.
b) acceleration.
b) m/s.
c) m/s?
d) m/h.
3. When the acceleration is negative, then the velocity :
a) Increases
b) decreases
c) is constant
d) is zero.
4. When the acceleration is zero, then the velocity :
a) Increases
c) is constant
b) decreases
5. The SI units of acceleration is:
d) is zero.
a) m.s
b) m/s
c) m/s?
d) cm/s
6. When an object is moving with uniform velocity, what is its acceleration?
i a) Zero.
b) Uniform..
d)Negative.
7. Given v, and vrand i in a problem, decide which equation to use to find dx
c)non-uniform.
8. Given v, and vrand Ax in a problem, decide which equation to use to find a
9. If the position of a particle moving on the x axis is given by x = 7 + 9 t – 2t³, then at t-0:
a) The position is:
b) The velocity is:
c) The acceleration is:
7. When a body moves from rest, the value of its initial velocity is:
8. If a stone dropped from the edge of a cliff and becomes in a free fall, then v, is equal to:
9. A ball thrown vertically upward by initial speed of vị. What is vr at maximum height?
Question2 (Projectile Motion)
1. The maximum horizontal range for projectile motion (with no air resistance) occurs at a
firing angle of:
a) 0º.
2. When an object is launched at an initial velocity v, in a direction making an angle of 25°
with the horizontal, then the component of the velocity along x-axis:
b) 30°.
c) 45°.
d) 90° .
a) increases
b) decreases
c) is constant
d) is zero.
Transcribed Image Text:Questionl (ID motion) 1. The rate of change of the velocity of an object is: a) Distance. 2. The SI units for velocity is: a) km/h. c) velocity. d)displacement. b) acceleration. b) m/s. c) m/s? d) m/h. 3. When the acceleration is negative, then the velocity : a) Increases b) decreases c) is constant d) is zero. 4. When the acceleration is zero, then the velocity : a) Increases c) is constant b) decreases 5. The SI units of acceleration is: d) is zero. a) m.s b) m/s c) m/s? d) cm/s 6. When an object is moving with uniform velocity, what is its acceleration? i a) Zero. b) Uniform.. d)Negative. 7. Given v, and vrand i in a problem, decide which equation to use to find dx c)non-uniform. 8. Given v, and vrand Ax in a problem, decide which equation to use to find a 9. If the position of a particle moving on the x axis is given by x = 7 + 9 t – 2t³, then at t-0: a) The position is: b) The velocity is: c) The acceleration is: 7. When a body moves from rest, the value of its initial velocity is: 8. If a stone dropped from the edge of a cliff and becomes in a free fall, then v, is equal to: 9. A ball thrown vertically upward by initial speed of vị. What is vr at maximum height? Question2 (Projectile Motion) 1. The maximum horizontal range for projectile motion (with no air resistance) occurs at a firing angle of: a) 0º. 2. When an object is launched at an initial velocity v, in a direction making an angle of 25° with the horizontal, then the component of the velocity along x-axis: b) 30°. c) 45°. d) 90° . a) increases b) decreases c) is constant d) is zero.
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