1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
defon
3 years ago
11

Tranh slowed his skateboard as he

Physics
1 answer:
ICE Princess25 [194]3 years ago
3 0

Answer:

Explanation:

Given parameters:

Initial velocity  = 8m/s

Final velocity  = 2m/s

Time taken  = 3seconds

Unknown and solution:

1. Is he accelerating or decelerating?

Tranh is obviously decelerating in this period. This is negative form of acceleration in which the speed reduces as the body comes to a stop.

Deceleration is a negative change in velocity with time i.e a body is reducing its velocity as time is changing.

2. What is the value?

 Mathematically;

          Deceleration  = \frac{Final velocity  - initial velocity}{time taken}

         Deceleration  = \frac{2 -8}{3}

                                  = -2m/s²

You might be interested in
An electric current in a metal consists of moving
Alik [6]
The answer would be (A) Protons
6 0
3 years ago
A cyclist going downhill is accelerating at 1. 2 m/s2. If the final velocity of the cyclist is 16 m/s after 10 seconds, what is
mel-nik [20]

Answer:

\boxed {\boxed {\sf v_i= 4 \ m/s}}

Explanation:

We are asked to find the cyclist's initial velocity. We are given the acceleration, final velocity, and time, so we will use the following kinematic equation.

v_f= v_i + at

The cyclist is acceleration at 1.2 meters per second squared. After 10 seconds, the velocity is 16 meters per second.

  • v_f= 16 m/s
  • a= 1.2 m/s²
  • t= 10 s

Substitute the values into the formula.

16 \ m/s = v_i + (1.2 \ m/s^2)(10 \ s)

Multiply.

16 \ m/s = v_i + (1.2 \ m/s^2 * 10 \ s)

16 \ m/s = v_i + 12 \ m/s

We are solving for the initial velocity, so we must isolate the variable v_i. Subtract 12 meters per second from both sides of the equation.

16 \ m/s - 12 \ m/s = v_i + 12 \ m/s -12 \ m/s

4 \ m/s = v_i

The cyclist's initial velocity is <u>4 meters per second.</u>

6 0
2 years ago
Daily life examples of pressure of solids on solids?​
Ipatiy [6.2K]

Explanation:

There's a massive amount, just think of anything everyday. Like a table on the floor, or when your walking around and putting pressure on the floor. When you squeeze something which is solid. Anything like that will do.

6 0
3 years ago
How much heat is needed to boil 200g of water from 30 degrees:
tiny-mole [99]

Answer:

80 degress is needed to boil 200g of water from 30 degress

6 0
2 years ago
7. Which of the following is NOT always true about a synthesis reaction!
Rainbow [258]

Answer:

C

Explanation:

the formula is a + b = ab

5 0
3 years ago
Other questions:
  • When a potential difference of 10 V is placed across a certain solid cylindrical resistor, the current through it is 2 A. If the
    9·1 answer
  • A newton-meter is a measure of work also known as the _____.
    11·1 answer
  • Suppose the angle of reflection measures 40 degrees. What is the angle of incidence?
    13·2 answers
  • What type of clouds are associated with low pressure?
    7·1 answer
  • Hi ) how to do this??
    10·1 answer
  • Why do electrons transfer charge and not protons?
    9·1 answer
  • FIRST ANSWER GETS BRAINLIST:
    8·2 answers
  • What relationship do you see between a star colour and temperature
    14·1 answer
  • There are three types of rocks on Earth. Each rock type forms in a different way. Igneous rocks were the first rocks on Earth. T
    7·2 answers
  • When running a long distance during the Texas summer which of the following would happen?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!