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Physics Competition
Physics Competition
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1
A navy cadet walks 4 meters east, 2 meters south, 4 meters west, and finally 2 meters north. What is the displacement?
8 meters
12 meters
4 meters
0 meter
2
What is a vector quantity?
completely specified by magnitude only
completely specified by neither
completely specified by direction only
completely specified by magnitude and direction
3
The maximum height of a projectile depends on:
Its time of flight
Its initial vertical velocity
Its mass
Its horizontal velocity
4
If air resistance is neglected, the horizontal component of velocity for a projectile
Reaches zero at the peak
Remains constant
Decreases
Increases
5
The vertical component of velocity for a projectile
increases with time
changes only at the highest point
remains constant
decreases with time until it reaches zero, then increases negatively
6
Which of the following factors affects the time it takes for an object to fall freely?
Its mass
Its height above the ground
Its shape
Its initial horizontal velocity
7
What is the resultant of the vectors in the following figure
-20
10
-10
20
8
What is the difference between distance and displacement?
Distance is scalar, displacement is vector
Distance is vector, displacement is scalar
Distance is a number, displacement is a unit
Distance is magnitude, displacement is direction
9
Which of the following is the same for both scalar and vector?
Both magnitude and direction
Magnitude
None of the above
Direction
10
What is the total distance traveled by Khalid if he walks 3 m east and then 4 m north?
3 m / 4 m = 0.75 m
3 m + 4 m = 7 m
3 m * 4 m = 12 m
\sqrt{\left(4^2+3^2\right)}=5
11
Which of the following is not a base SI unit?
Meter
Gram
Kelvin
Ampere
12
What is the only force acting on a free-falling object (neglecting air resistance)?
Gravitational Force
Centripetal Force
Centrifugal Force
Resultant Force
13
What is a scalar quantity?
completely specified by direction
completely specified by neither
completely specified by magnitude
completely specified by both
14
The prefix 10
-6
is called
Micro
Mega
Milli
Kilo
15
How is the resultant of two vectors calculated in a right triangle?
using inverse trigonometric functions
using simple subtraction
using simple addition
using Pythagorean rule or right-triangle trigonometry
16
What are the SI base units for mass, length, and time?
Second, Kelvin, Candela
Meter, Kilogram, Candela
Kilogram, Second, Meter
Kilogram, Meter, Second
17
The arrows in the following figure indicate the direction. What is the direction of the highway straight from B to A?
S of W
N of E
S of E
N of W
18
What quantity measures the rate of change in velocity?
Displacement
Acceleration
Resultant
Speed
19
In the adjacent diagram find the distance and displacement between point A and point B
distance is 700m and displacement is 200m
both distance and displacement are 200m
both distance and displacement are 700m
distance is 200m and displacement is 700m
20
The rate at which an object changes its position is called
Speed
Displacement
Velocity
Acceleration
