Center of mass, Momentum, Impulse, Collision
Quiz by Joriel J. Cruz
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- Q 1/25Score 0
Why is the car on the left unstable?
29it has more height
Its center of mass is high
it has a narrow base
All of the above
- Q1
Why is the car on the left unstable?
it has more height
Its center of mass is high
it has a narrow base
All of the above
30s - Q2
Why is the car on the right more stable?
It has a wider base
Its center of mass is higher
it has more height
all of the above
30s - Q3
If you considered a point half way along the handle, which word would correctly complete the following sentence?
The mass of the right side is ------ compared to the left side.
lower
higher
equal
none of the above
30s - Q4
The centre of mass of a triangle is the meeting point of
angles
heights
lines of symmetry
perpendiculars
30s - Q5
What is the center of mass ?
it is a single point at which the object can balance.
A point where the mass of an object is distributed equally around it.
All of the above
the center of gravity of the object
30s - Q6
Where is the center of mass of this image
Users enter free textType an Answer30s - Q7
Where is the center of mass for this football?
In the center of the ball
On the surface of the ball
Above the ball
To the left of the ball
30s - Q8
How do we quickly find the location of an object's center of mass if it is not symmetrical?
Find the balance point
Use the center of mass formula.
You can only estimate where the center of mass is.
The center of mass is always in the middle.
30s - Q9
Which is the most likely location of the paintbrush's center of mass?
3
1
2
4
30s - Q10
The law of conservation of momentum states that,
p before is the same as p after
p before is less than p after
p before is more than p after
30s - Q11
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
10 kg-m/s
0.1 kg-m/s
1 kg-m/s
100 kg-m/s
60s - Q12
If 2 objects collide and stick together, what will happen to their velocities?
velocities will increase
velocities will stay the same
velocities will decrease
none of the above
30s - Q13
A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?
50 kgm/s
30 kgm/s
0 kgm/s
10 kgm/s
60s - Q14
A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg, collides with a smaller box with a mass of 2 kg that is stationary. The boxes stick together. What is the velocity of the two combined masses after collision?
0 m/s
4 m/s
8 m/s
12 m/s
60s - Q15
A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?
375 m/s
375 kg m/s
25 m/s
25 kg m/s
60s
