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iragen [17]
3 years ago
7

A bus initially at rest accelerated of 4m/S2 at the end of 10 second find average velocity​

Physics
1 answer:
elixir [45]3 years ago
6 0

Answer:

V = 20m/s

Explanation:

Given the following data;

Acceleration = 4m/s²

Time = 10 secs

Initial velocity = 0m/s (since it's at rest).

To find the average velocity, we would use the first equation of motion;

V = U + at

Where;

V is the final velocity.

U is the initial velocity.

a is the acceleration.

t is the time measured in seconds.

Substituting into the equation, we have;

V = 0 + 4*10

V = 40m/s

To find the average velocity;

Average velocity = (U + V)/2

Average velocity = (0 + 40)/2

Average velocity = 40/2

Average velocity = 20m/s

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mrs_skeptik [129]

Answer:

Explanation:

2) From F=ma

Force =15×40=600N or kgm/s2

3)From the same equation making acceleration the subject of the formula will give

a=f÷m

=24÷4=6m/s2

4)m=f÷a

=45÷15=3kg

4 0
3 years ago
3. A stone is thrown upward at an angle. What happens to the horizontal component of its velocity as it rises
Dominik [7]

Answer:

The horizontal component of the velocity does not change.

Explanation:

Neglecting air resistance, there is no other force acting against the horizontal component, and hence the velocity does not change.

3 0
3 years ago
Question # 3
Rzqust [24]

Explanation:

The moment of A about B is given by the formula

M=Fd

where M is the moment, F is the force acting perpandicular to the axis of rotation about B by A, and d is the horizontal distance of A from B along the axis of rotation.

Now

F=230 (N)

(a) At X,

M=(230)(4/2)=460 (Nm)

(b) At 0.5m from X,

M=(230)(2-0.5)=345 (Nm)

(c) At Y,

M=-(230)(2)=-460 (Nm)

where negative sign indicates clockwise rotation of the child about Z.

(d) At Z,

M=(230)(0)=0 (Nm)

7 0
3 years ago
The median of a set of numbers can be found by using the __________
attashe74 [19]
The answer is D, the middle number. cause the median is found be arranging the numbers from smallest to largest and finding the one in the middle, if that makes any sense :/
3 0
4 years ago
Read 2 more answers
A boat is heading across a river at a velocity of 25 mph. The river is flowing downstream at 10 mph. What is the actual velocity
AnnyKZ [126]
Principle: Pythagorean theorem

Given:
Let a = boat velocity = 25 miles per hour
      b = river velocity = 10 miles per hour

Required: c = actual velocity

Solution:
     
     c^2 = a^2 + b^2
     c^2 = (25)^2 + (10)^2
     c^2 = 725
     (c^2)^0.5 = (725)^0.5
      c = 26.93 miles per hour

<em>ANSWER: Actual boat velocity is 26.93 miles per hour</em>
8 0
3 years ago
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