The truck needs engine ........... the car.
equal
smaller than
bigger than
When an object crashes another one transfers some energy to it.
True
False
Kinetic energy depends on _______
speed and mass
speed and direction
mass and direction
By increasing the mass of the object the kinetic energy_________
not affected
increases
decreases
The kinetic energy of the object depends on its_____
direction
energy
speed
The kinetic energy ..........by increasing the speed of object.
decrease
increase
The big vehicle causes ......... harms during the collision than the small one moves by the same speed
more
less
If the speed increases to double the kinetic energy increases ____
three times
six times
four times
.................it is the crashing of two objects with each other.
Energy
Collision
Motion
The slow rubber ball produce higher sound when it hits the racket more than the faster one.
To avoid accident we shouldn’t ride the car with ............
low speed
high speed
The energy changes during collision from __________
kinetic to potential
kinetic to heat
potential to kinetic
The fast objects cause a big harm during collision.
By increasing the mass the speed ________
By increasing the mass of the object ____________
the harms of collision decreases
the kinetic energy decreases
the consuming of fuel increases.