What should be the value of t so that the vectors A = (2, 5) and B = (10, t) become perpendicular to each other.
Anonymous Quiz
22%
4
53%
-4
13%
-3
12%
-17
What should be the other component of a 500 N force, if one of its component is 300 N ?
Anonymous Quiz
55%
200 N
5%
600 N
18%
400 N
22%
800 N
Given that: A = 2i + 5j and B = i - 3j, then what is A + B?
Anonymous Quiz
5%
i + 4j
13%
3i - 2j
73%
3i + 2j
9%
3i - 8j
ā¤5š¤1
If 0.8i + k j is a unit vector, then what is (are) the value (s) of k?
Anonymous Quiz
21%
Ā± 0.8
61%
Ā± 0.6
14%
0.6
4%
- 0.6
ā¤4
ā¤10š„1
ā¤7š„3
Which one of the following statement is NOT true about distance and displacement?
Anonymous Quiz
12%
Distance is scalar quantity, whereas displacement is a vector quantity.
20%
Distance can never be negative, whereas displacement can be negative.
8%
Both distance and displacement can be measured in units such as meters, kilometers, etc.
60%
The distance between two objects is equal to displacement at any time.
š„3
A rate of change of velocity is:
Anonymous Quiz
9%
displacement
6%
Momentum
85%
Acceleration
1%
Force
ā¤8
A runner jogs 14 km North then turns and runs 16 km East in three hours. What is his average speed?
Anonymous Quiz
50%
10 km/hr
24%
2/3 km/hr
15%
74.66 km/hr
10%
21. 26 km/hr
ā¤3š¤1
Which of the following statement is Not true about acceleration?
Anonymous Quiz
10%
Acceleration is defined as the rate of change of velocity.
75%
Acceleration is defined as the rate of change of speed.
3%
Acceleration is measured in m/sĀ².
12%
When an object is uniformly accelerated, its acceleration remains constant.
The gradient of the line of velocity-time is equal to:
Anonymous Quiz
2%
Distance
31%
Displacement
63%
Acceleration
4%
Speed
ā¤6
A cheetah accelerates at 3 m/sĀ² for 5 s. If its final velocity is 24 m/s, then what is its initial velocity?
Anonymous Quiz
59%
9 m/s
25%
39 m/s
9%
16 m/s
7%
5 m/s
š„1