Master Linear Kinematics: A Comprehensive Guide for Biomechanics Students

Question 1

An object's displacement is the:

Accepted Answer

net change in position

Answer

total path length traveled

Answer

average velocity of the object

Answer

rate of change of acceleration

Question 2

Velocity is a vector quantity because it:

Accepted Answer

has both magnitude and direction

Answer

is a measure of speed

Answer

can be positive or negative

Answer

is independent of the reference frame

Question 3

Which of the following equations accurately relates displacement, initial velocity, and acceleration?

Accepted Answer

s = ut + 1/2 * a * t²

Answer

v = u + at

Answer

a = v * t + 1/2 * s²

Answer

u = a * t + 1/2 * s²

Question 4

Which of the following factors does NOT influence the acceleration of a free-falling object?

Accepted Answer

density of the object

Answer

mass of the object

Answer

gravitational force

Answer

air resistance

Question 5

Which of the following graphs best represents the motion of an object moving with constant velocity?

Accepted Answer

a straight line with positive slope

Answer

a straight line with negative slope

Answer

a parabola

Answer

a circle

Question 6

A projectile is launched with an initial velocity at an angle of 45° to the horizontal. How does it move?

Accepted Answer

It travels in a parabola.

Answer

It travels in a straight line.

Answer

It travels in a circle.

Answer

It travels in a spiral.

Question 7

A soccer ball is kicked with an initial velocity of 20 m/s at an angle of 45 degrees to the horizontal. Calculate the horizontal component of the ball's initial velocity.

Accepted Answer

14 m/s

Answer

10 m/s

Answer

17 m/s

Answer

20 m/s

Question 8

Which of the following is NOT a factor that influences the acceleration of an object?

Accepted Answer

Velocity

Answer

Mass

Answer

Force

Answer

Time

Question 9

Which of the following graphs represents the motion of an object with constant acceleration?

Accepted Answer

A straight line with a positive slope

Answer

A straight line with a negative slope

Answer

A parabola

Answer

A circle

Question 10

An athlete jumps vertically upwards and reaches a maximum height of 1 meter. Calculate the athlete's initial vertical velocity.

Accepted Answer

4 m/s

Answer

2 m/s

Answer

6 m/s

Answer

8 m/s

Question 11

Explain how linear kinematics can be used to analyze the performance of a sprinter, considering factors such as acceleration, speed, and stride length.

Accepted Answer

Analyzing the sprinter's acceleration during the starting phase and its impact on race performance.

Accepted Answer

Determining the sprinter's maximum speed and stride length to evaluate running efficiency.

Answer

Analyzing the height of the athlete's jump to assess vertical power and explosiveness.

Answer

Calculating the angle of the sprinter's body to determine lean and air resistance.

Question 12

What is the SI unit for acceleration?

Accepted Answer

Meter per second squared (m/s²)

Answer

Meter per second (m/s)

Answer

Kilometer per hour (km/h)

Answer

Miles per hour squared (mph²)

Question 13

Which of the following is the correct formula for calculating displacement, where d represents displacement, v represents velocity, and t represents time?

Accepted Answer

d = v * t

Answer

d = v + t

Answer

d = at^2

Answer

d = 1/2 at^2

Question 14

A runner covers a distance of 100 meters in 10 seconds. What is the runner's average velocity?

Accepted Answer

10 m/s

Answer

100 m/s

Answer

1 m/s

Answer

0.1 m/s

Question 15

Which of the following is a scalar quantity, meaning it only has magnitude and not direction?

Accepted Answer

Time

Answer

Velocity

Answer

Displacement

Answer

Acceleration

Question 16

A ball is thrown vertically upwards with an initial velocity of 10 m/s. What will be its velocity at the highest point of its trajectory?

Accepted Answer

0 m/s

Answer

5 m/s

Answer

10 m/s

Answer

15 m/s

Question 17

Which of the following graphs represents constant acceleration, where the vertical axis represents velocity and the horizontal axis represents time?

Accepted Answer

A straight line with a positive slope

Answer

A parabola

Answer

A circle

Answer

An ellipse

Question 18

Which of the following factors does NOT affect the acceleration due to gravity?

Accepted Answer

Volume of the object

Answer

Mass of the object

Answer

Distance from the center of the Earth

Answer

Atmospheric pressure

Question 19

A projectile is launched at an angle of 45 degrees to the horizontal. What is the relationship between its horizontal and vertical velocities at the moment of launch?

Accepted Answer

They are equal

Answer

The horizontal velocity is twice the vertical velocity

Answer

The vertical velocity is twice the horizontal velocity

Answer

The velocities are not related

Question 20

Which of the following is the SI unit of displacement?

Accepted Answer

Meter (m)

Answer

Second (s)

Answer

Kilogram (kg)

Answer

Joule (J)

Question 21

An object moving with a constant velocity of 10 m/s covers a distance of 200 m. Calculate the time taken by the object to cover this distance.

Accepted Answer

20 s

Answer

40 s

Answer

50 s

Answer

10 s

Question 22

Which of the following graphs represents the velocity-time graph of an object moving with a constant acceleration?

Accepted Answer

Straight line with a positive slope

Answer

Sinusoidal curve

Answer

Straight line with a negative slope

Answer

Parabolic curve

Question 23

What physical quantity is represented by the area under the velocity-time graph?

Accepted Answer

Displacement

Answer

Acceleration

Answer

Velocity

Answer

Time

Question 24

Identify an example of one-dimensional motion.

Accepted Answer

A car moving along a straight road

Answer

A satellite orbiting the Earth

Answer

A person running on a circular track

Answer

A ball thrown into the air