Atruck slows down. which claim about the forces acting on the truck must be true? choose 1 choose 1 (choice a) a there are no forces on the truck. (choice b) b there is no net force on the truck. (choice c) c there is not enough information. (choice d) d there is a net force on the truck.
"There is a net force on the truck" is true about the forces acting on the truck.
When truck is in contact with the road and is moving, several forces acts on the moving truck.
The net force is a sum of the forces that acts in opposite directions and same directions. When the truck is moving there is a normal force of the road acting upwards which is balanced by the weight of the truck that acts downward.
"There is no net force on the bird" is true about the force acting on the bird.
For a body with constant velocity, the net force is always equal to zero.
When a body moves in constant velocity, the forces acting on the body is its weight in downward direction and the air drag in the upward direction. Each cancels each other so the body doesn’t move vertically upwards or vertically downwards.
This phenomenon helps the bird to glide through the air with constant velocity. The frictional force is cancelled by the motion opposite to it.
Choice B) B There is no net force on the hockey puck.
In case when the hockey puck the slides with the same velocity or constant velocity so the force with respect to the hockey should contain that there is no net force as if the body moves along with the same velocity or the constant velocity so in this case the body acceleration is zero
And according to the newton second law i.e.
F = ma
In case when the acceleration is zero so the net force is zero
Therefore the option b is correct
the force of gravity
there is no net force on the bird.
b would be the answer
what was the acceleration of the 2 kg cart?
⇒ 16.0 cm/s2
what was the acceleration of the 4 kg cart?
⇒ 8.1 cm/s2
what was the acceleration of the 6 kg cart?
⇒ 5.3 cm/s2