Worksheetsgrade 4 , con 6 , lesson 2
Total questions: 10
Worksheet time: 5mins
The measuring units of distance are..........
second and meter.
hour and kilometer.
hour and second.
kilometer and meter.
...............and ............ are the main factors that we need to calculate the speed of an object
time - kinetic energy
distance - kinetic energy
distance - time
kinetic energy - potential energy
How can we calculate the speed of an object?
Speed = distance + time
Speed = distance x time
Speed = distance ÷ time
Speed = distance - time
Which of the following is a measuring unit of speed?
hr/km.
sec/m.
kg/sec.
m/sec.
What is the speed of a car that travels 400 meters in 4 second?
100 m/sec.
20 m/sec.
30 m/sec.
40 m/sec.
When the kinetic energy of a moving body........ , its speed...........
increases - doesn't change.
increases - increases.
decreases - doesn't change.
decreases - increases.
As the angle of a ramp decreases, the speed of a toy car rolling on it ...........and its kinetic energy..........
increases - decreases.
increases - increases.
decreases - decreases.
decreases - increases.
An object keeps moving with same speed when............
its kinetic energy decreases.
its potential energy increases.
no another force stops it.
another object collides with it.
If the angle of inclination of a hill increases, the kinetic energy of an object moving down it will
decrease.
increase.
remain as it is.
be destroyed.
We can use the speed of an object to know the .......energy of this object
thermal
kinetic
Potential
Sound
