A 10 kg ball is traveling at the same speed as a 1 kg ball. Compared to the 10 kg ball, the 1 kg ball has
2 answers:
A 10 kg ball is travelling at the same speed as a 1 kg ball. It has 1/10 the momentum when compared to the 10 kg ball
Answer: Option 2
<u>Explanation:</u>
If two objects travel with same speed, then the momentum can be calculated by the following,
Consider mass of 1 kg ball is
for 10 kg ball as
Velocity is same for both so it is v
Momentum,
Then,
When substituting for v as , we get
From this, we know momentum of 1 kg ball is 1/10 times that of 10 kg ball.
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Answer and Explanation:
(a) The fre-body diagrams for each block is shown below. In the block of mass 3.60 kg, there are 3 forces acting on it: horizontal force due to the rope (), vertical gravitational force (
) and vertical normal force (
), due to the surface. Since there is no vertical movement,
and
cancels it out. So, for this block, net force is horizontal due to the rope
.
The block of mass m is hanging from the pulley, so there is the force of the rope () and the gravitational force (
). Both are vertical, because there is no surface "holding" block m.
(b) Since both blocks are attached to each other, the acceleration will be the same. To calculate it, we use the Second Law of Motion:
a = 5.22
The acceleration of either block is 5.22 m/s².
(c) Block m has 2 forces acting on it: tension and gravitational force. Gravitational force is the force of attraction the Earth does over an object. It is calculated as the product of mass and gravitational acceleration, which has magnitude g = 9.8 m/s².
Suppose positive referential is going up. To determine mass:
m = 1.25
Block m has 1.25 kg.
(d) Gravitational force is also called weight. So, as described above: .
The weight for the hanging block is
12.25 N
Comparing tension and weight:
≈ 0.65
We can see that, weight of the hanging block is almost 0.65 times smaller than the tension on the rope.
Answer:
A) Three hole punch and either a layered plastic or paper
B) Identify the lengths involved ,
Length of input arm / length of output arm = L1/ L2
Explanation:
<u>a) Materials involved includes :</u>
Three hole punch and either a layered plastic or paper
Identify the forces acting on the three-hole punch which are Input and output forces
Identify the points where they act
<u>B) procedures involved </u>
The mechanical advantage = output force / input force
step one: Identify the lengths involved
assuming no friction or relatively small friction \
mechanical advantage can be calculated as : Length of input arm / length of output arm = L1/ L2
