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Sedaia [141]
4 years ago
10

A shopping cart given an initial velocity of 2.0 m/s undergoes a constant acceleration of 3.0 m/s2. What is the magnitude of the

cart’s displacement after the first 4.0 s of its motion?
Physics
1 answer:
Tema [17]4 years ago
6 0

Answer:

32 m

Explanation:

initial velocity (u) = 2 m/s

accceleration (a) = 3 m/s^{2}

time (t) = 4 s

What is the magnitude of the cart’s displacement (s) after the first 4.0 s of its motion?

from the equation of motion, displacement (s) = ut + 0.5at^{2}

where

  • u is the initial velocity
  • t is the time
  • a is the acceleration

inserting all required values into  (s) = ut + 0.5at^{2}          

(s) = 2x4 + 0.5x3x4^{2}

s = 8 + 24

s = 32 m

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The mass of the bicycle and rider is 60 kg and the total area of the tyres in contact with
AleksAgata [21]

Answer:

a little

Explanation:

First of all, it's not how you spell "tyres", it is tires.

Second of all, you already know the Mass so what you need to find out now is  contact the road. You Know that your number and letter are squared so that would turn into 6m x 2.4. Then you do the math do continue on to finish it. Have a great day!! Good luck with the answer!!

3 0
3 years ago
If an object's mass is decreasing while a constant force is applied to the object, would its acceleration decrease, increase, or
Arlecino [84]

Answer:

With the decreasing object mass, the acceleration will also decrease.

Explanation:

Newton's second law of motion infers the relation between force F, acceleration a and mass m of a body. It is expressed as:

F = ma

When force is constant, we get m α 1/a, that is mass is inversely proportional to the acceleration of the body.

Hence when object's mass decreases, the acceleration will increase. and vice versa

8 0
4 years ago
tony walks at an average speed of 70m/min from home to school. If the difference between his home and the school is 2100 m, how
finlep [7]
Answer. 30 minutes
Explanation. If he walks 70 m in one minute how long will it take him to walk 2,100 m. Well, this is a simple division problem (you could also use a ratio box).
2100/70= 30. Hope this helps, let me know if it’s correct so others can use it :)
Good luck.
5 0
3 years ago
When is evidence considered scientific?
ra1l [238]
When it has been proven by science to be true.
8 0
4 years ago
ou are to drive to an interview in another town, at a distance of 300 km on an expressway. The interview is at 11:15 a.m. You pl
Shkiper50 [21]

Answer:

133.62 kmh.

Explanation:

Time provided = 3.25 hours.

Distance to be covered 300 km

Times spent in first  100 km = 1 hour

Time spent in next 43 km

= 43 / 40 = 1.075 hours

Total time spent = 2.075 hours

Total distance covered = 143 km

Distance remaining = 300 - 143

=157 km .

Time remaining = 3.25 - 2.075

= 1.175

Speed required = Distance remaining / time remaining

= 157 / 1.175

= 133.62 kmh.

8 0
3 years ago
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