6. If a person pushes a cart with a force of 40N and it accelerates at 0.5 m/s2, what is the
mass of the cart?
a. 80N
b. 80 kg
C. 20 N
d. 20 kg
Answers
The mass of cart pushed by a 40 Newton force moving with an acceleration of 0.5 m/s² is 80 Kg.
What is force?
In order to move a body ofmass 'm'kg with an acceleration of 'a' m/s², a force of magnitude → |F| = ma is needed to push the body in a specified direction.
Given is a cart pushed by a 40 Newton force moving with an acceleration of 0.5 m/s².
Mass of block = m Kg [assume]
Force on cart [F] = 40 N
Acceleration of cart [a] =0.5 m/s²
From the definition of force -
|F| = ma
m = |F|/a
m = 40 / 0.5
m = 80 kg
Therefore, the mass of cart pushed by a 40 Newton force moving with an acceleration of 0.5 m/s² is 80 Kg.
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40=0.5m
m=40/0.5
m=80kg
The answr is b
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Answers
Final answer:
If the force remains unchanged, pushing a box three times farther requires three times more work because work is directly proportional to distance in the work formula W = F × d.
Explanation:
The student is asking about the work required to push a box across a room. In Physics, work is defined as the product of the force applied to an object and the distance over which it is applied, assuming force and distance are in the same direction. The formula for work is W = F × d, where W is work, F is the constant force applied, and d is the distance the object moves.
Assuming the same constant force is applied to the box if a student needs to push the box three times farther, they would do three times more work. This is because work is linearly proportional to the distance if the force remains unchanged. To illustrate, if pushing the box over a certain distance requires W joules, then pushing it three times that distance requires 3W joules of work.
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Answer:
Removing some of the books reduced the mass of the box, and less force was needed to push it across the floor.
Answers
When sound waves are reflected in the right way so as to be heard
some time after they were generated, then the phenomenon is usually
called an "echo".
Mass
Diameter
Height of drop
Tennis Ball
0.06 kg
6.6 cm
5 m
Baseball
0.15 kg
74 cm
5 m
Bowling Ball
5 kg
21 cm
5 m
Golf Ball
0.04 kg
4.3 cm
5 m
Statement 1: All balls hit the ground at the same time
Statement 2: All balls hit the ground with different forces
Statement 3: The bowling ball hit the ground first and the tennis and golf ball hit the ground last
Statement 4: It is not possible to tell how much force each ball hit the ground with
Answers
Answer:
statement 2
Explanation:
Answers
Final answer:
The density of each half of the aluminum block remains the same as the original block, 2.7 g/cm³. Density is an intrinsic property of a material and does not change when the amount of the material changes.
Explanation:
The density of a material remains constant regardless of the amount of that material. The density is an intrinsic property defined as mass divided by volume. When you cut a block of aluminum in half, you are halving both the mass and the volume. Since both are reduced by the same proportion, the ratio of mass to volume (i.e., the density) stays the same. Thus, the density of each half of the aluminum block remains 2.7 g/cm³.
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Answers
Answer:
14 kg
Explanation:
Momentum = mass × velocity
p = mv
100 kg m/s = m (7.0 m/s)
m ≈ 14 kg
Answers
If you notice any mistake in my english, please let me know, because my english level is still low.