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puteri [66]
3 years ago
9

Your shopping cart has a mass of 65 kilograms, In order to accelerate the shopping cart down an aisle at 0.3 m/sec2, what force

would you need to use or apply to the cart?
Physics
1 answer:
garri49 [273]3 years ago
4 0
Remember Newton's second law: F=ma

to get the force in newtons, mass should be in kg and acceleration in m/s^2

conveniently, we don't need to convert units

we just need to multiply the two to get the force

65* 0.3 = 19.5 kg m/s^2 or N

if significant digit is an issue, the least number if sig figs is 1 so the answer would be 20 N
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2. A 5 year old child pushes with a force of 5 N to get a sumo wrestler to move, but the
Svetllana [295]

formula= W=f*d

w=work done

f=force

d=distance

w=f*d

w= 5n*0(does not budge)means does not move so distance is zero

w=5J

The work done by the children on the sumo wrestler is 5J

6 0
3 years ago
A rope breaks when the tension reaches 205 N. What is the maximum speed at which it can swing a 0.477 kg mass in a circle of rad
jekas [21]

Answer:

Maximum velocity will be 17.651 m /sec

Explanation:

We have given a rope breaks when tension reaches 205 N

Mass m = 0.477 kg

Radius of the circle r = 0.725 m

Tension in the rope is given by

T=\frac{mv^2}{r}

205=\frac{0.477\times v^2}{0.725}

0.477v^2=148.625

v^2=311.5828

v = 17.651 m /sec

8 0
3 years ago
A ball held above the floor has what type of energy?
kondaur [170]

Answer: I think the answer is B. Potential energy

Explanation:

Because the higher the ball is held up the more energy it has.

I hoped I really helped out. ;)

7 0
3 years ago
Read 2 more answers
A _____ has a definite ratio of components
user100 [1]
A compound has a definite ratio of components
6 0
3 years ago
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A satellite orbiting Earth at a velocity of 3700 m/s collides with a piece of
Gekata [30.6K]

Answer: B

Explanation:

You can use the conservation of momentum, under the assumption that no mass was lost when the collision occurred. The initial momentum of the system must equal the final momentum of the system. Our system is the region including, and only including, the satellite and the space debris. Classical momentum is defined as the product of mass and velocity:

p_i=p_f

m_1v_1_i+m_2v_2_i=m_1v_1_f+m_2v_2_f

Due to mass 1 equaling mass 2, we can factor these quantities out:

m(v_1_i+v_2_i)=m(v_1_f+v_2_f)

Cancel the mass term on both sides to get:

v_1_i+v_2_i=v_1_f+v_2_f

We have the initial and final velocities for everything besides the final velocity of the satellite. Plug everything in:

3700m/s+6000m/s=v_1_f+3700m/s

v_1_f=6000m/s

7 0
2 years ago
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