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vaieri [72.5K]
4 years ago
9

A car accelerates from 10 km/hr to 50 km/hr in 8 seconds. What is the acceleration?

Physics
1 answer:
nikklg [1K]4 years ago
6 0
The answer is 5 km/hr

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The same strength force was exerted in the same direction on both Object A and Object B. Why did Object A go faster than Object
VashaNatasha [74]

Answer:

m_B > m_A

the mass of body B must be greater than the mass of body A

Explanation:

Newton's second law establishes a linear relationship between the force, the mass of the body and its acceleration

        F = m a

        a = F / m

Let's analyze this expression tells us that the force is of equal magnitude for the two bodies, but body A goes faster than body B, this implies that it has more relationships

         a_A > a_B

         \frac{F}{m_A} > \frac{F}{m_B}

         m_B > m_A

Therefore, for this to happen, the mass of body B must be greater than the mass of body A

6 0
3 years ago
How are Piaget and Erikson's theories different?
SOVA2 [1]
D) all of the above is the answer
8 0
3 years ago
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How much physical activity do children and trens need?
saveliy_v [14]

Answer:

it should be 60 min at least 3 days a week

8 0
3 years ago
Which most likely could cause acceleration?
Anastaziya [24]

Answer:

this may seem wierd but a hill

Explanation:

a hill if its steep enough and you have wings on a car or something could make you fly depending the weight wind would also help a stop light no a flat road could if you going fast enough wat movement is depending thiers your 4 options hopee you learned something

8 0
3 years ago
Two vectors are illustrated in the coordinate plane.
oksano4ka [1.4K]

Answer: (-4.3, 2.5)

Explanation:

In the second quadrant, magnitude of the vector is 5 and angle is 30° from the negative x-axis.

We can write this in terms of its components:

-5 cos 30^o \hat i + 5 sin 30^o\hat j

-4.3\hat i+2.5 \hat j

Thus, the components of vector in the second quadrant are (-4.3, 2.5)

4 0
3 years ago
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