Experiment and explain finding resultant force of several forces on the same plane acting on objects.
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Q 1/20
Score 0
Which of the following is NOT considered a fluid?
30
Honey
Air
Wood
Water
Q 2/20
Score 0
Fluid friction is also known as:
30
Kinetic friction
Rolling friction
Drag
Static friction
20 questions
Q.
Which of the following is NOT considered a fluid?
1
30 sec
SC8.FM.1
Q.
Fluid friction is also known as:
2
30 sec
Q.
Which type of friction is usually the weakest?
3
30 sec
Q.
What happens to static friction as you increase the force pushing an object?
4
30 sec
Q.
Which factor does NOT affect friction?
5
30 sec
Q.
Streamlining an object helps to:
6
30 sec
Q.
What causes friction?
7
30 sec
Q.
Which of the following surfaces would likely have the highest friction?
8
30 sec
Q.
Why is it easier to push a heavy object once it is already moving?
9
30 sec
Q.
Why do vehicles travelling at higher speeds face more air resistance?
10
30 sec
Q.
A 10 kg box is being pulled across a floor with a force of 50 N. The coefficient of kinetic friction between the box and the floor is 0.2. What is the acceleration of the box?
11
30 sec
Q.
A car is travelling at 20 m/s and comes to a complete stop in 5 seconds. What is the coefficient of friction between the car's tyres and the road?
12
30 sec
Q.
A 5 kg object is sliding down a ramp inclined at 30 degrees to the horizontal. The coefficient of kinetic friction between the object and the ramp is 0.1. What is the force of friction acting on the object?
13
30 sec
Q.
A block is resting on a horizontal surface. The coefficient of static friction between the block and the surface is 0.5. If the block has a mass of 2 kg, what is the maximum horizontal force that can be applied to the block before it starts to move?
14
30 sec
Q.
A ball is thrown vertically upward with an initial velocity of 10 m/s. If the air resistance is negligible, what is the maximum height the ball reaches?
15
30 sec
Q.
A boat is moving through water with a velocity of 5 m/s. The water exerts a drag force of 100 N on the boat. What is the power required to maintain this velocity?
16
30 sec
Q.
A 2 kg ball is rolling down a hill with a constant acceleration of 2 m/s². If the ball starts from rest, what is its velocity after 3 seconds?
17
30 sec
Q.
A skydiver jumps out of a plane and reaches a terminal velocity of 50 m/s. If the skydiver's mass is 80 kg, what is the magnitude of the air resistance force acting on the skydiver at terminal velocity?
18
30 sec
Q.
A 10 kg object is placed on a horizontal surface with a coefficient of static friction of 0.4. A horizontal force of 30 N is applied to the object. Does the object move?
19
30 sec
Q.
A car of mass 1000 kg is travelling at a constant speed of 10 m/s on a level road. The coefficient of rolling friction between the car's tyres and the road is 0.02. What is the power required to overcome the rolling friction?
