Question 1

What is meant by the term biomechanics?

Accepted Answer

E is incorrect. C and D are subjects within biomechanics and biomechanics is an area within A

Question 2

What is meant by the term linear kinematics?

Accepted Answer

Linear (or translatory) kinematics refer to movement in a straight or curved lines as long as there is no rotation and all body parts move in the same direction at the same speed

Question 3

How many yards are there in 1 mile

Accepted Answer

There are 1,760 yards in 1 mile

Question 4

How many kilometres is 1 mile

Accepted Answer

There are 1.609 kilometres in 1 mile

Question 5

A scalar quantity is:

Accepted Answer

A scalar quantity is a quantity represented by magnitude only (without direction - i.e. speed or distance)

Question 6

Distance is:

Accepted Answer

Distance is irrespective of direction, for example a single lap around a 400m running track would achieve a distance of 400m.

Question 7

Displacement is:

Accepted Answer

Displacement accounts for direction. For example if the direction of a race was known (north-east, or a straight line between point a and b) the term displacement could be used. Another example may be that a single lap around a 400m running track may result in a distance of 400m but a displacement of 0m.

Question 8

Positive acceleration generally means 'speeding up' in in the context of human motion.

Accepted Answer

Acceleration is defined as the change in velocity per unit of time. Positive acceleration generally means 'speeding up' in in the context of human motion as athletes will generally be moving forward in a horizontal plane.

Question 9

It is possible to have a 'negative acceleration' value while the athlete or object is actually 'speeding' up.

Accepted Answer

This is due to the direction of the acceleration. While this would not occur in horizontal movements, this may occur in in the case of acceleration due to the gravity of the Earth. This would be a downward (towards the earth) acceleration of 9.81 m/s² (i.e. an object will speed up (increase its velocity) as it falls towards the centre of the Earth.

Question 10

Speed and velocity cannot be measured in the same units because speed does not account for direction.

Accepted Answer

Speed and velocity are often measured in the same units including miles per hour (MPH), metres per second (m/s) and kilometres per hour (km/h).

Question 11

Determine the average speed of an athlete in metres per second (m/s) who ran a 100m race in 10.87 seconds

Accepted Answer

The answer of Determine the average speed of an athlete...

Question 12

Determine the average speed of an athlete who ran a 10,000 m race in 26 minutes and 17.53 seconds

Accepted Answer

The answer of Determine the average speed of an athlete...

Question 13

Convert 37.67 minutes into minutes and seconds

Accepted Answer

The answer of Convert 37.67 minutes into minutes and seconds...

Question 14

Provide some examples of scalar quantities in sport

Accepted Answer

The answer of Provide some examples of scalar quantities in...

Question 15

Convert 3 hours 23.6 minutes into seconds

Accepted Answer

The answer of Convert 3 hours 23.6 minutes into seconds...

Question 16

Convert 3 hours 23.6 minutes into hours

Accepted Answer

The answer of Convert 3 hours 23.6 minutes into hours...

Question 17

Convert 3 hours 23.6 minutes into minutes

Accepted Answer

The answer of Convert 3 hours 23.6 minutes into minutes...

Question 18

If an athlete swam a 1500m race in 14 minutes and 31.02 seconds what would be their average speed in m/s?

Accepted Answer

The answer of If an athlete swam a 1500m race...

Question 19

Explain how the units of m/s² for acceleration are derived

Accepted Answer

The answer of Explain how the units of m/s² for...

Question 20

The centre of mass (COM) is defined as:

Accepted Answer

The centre of mass can be defined as the point that corresponds to the mean (average) position for the concentration of the entire matter in the body or segment.

Quiz 1: Kinematics of Linear Motion