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
nasty-shy [4]
2 years ago
13

A ball is thrown vertically upwards with a velocity of 9.8 m/s. Its velocity after 1 second will be

Physics
1 answer:
Reil [10]2 years ago
5 0

\LARGE{ \underline{\underline{ \purple{ \bf{Required \: answer:}}}}}

GiveN:

  • Initial velocity = 9.8 m/s²
  • Accleration due to gravity = -9.8 m/s²
  • Time taken = 1 s

To FinD:

  • Final velocity of the ball?

Step-by-step Explanation:

Using the first Equation of motion,

⇒ v = u + gt

⇒ v = 9.8 + -9.8(1)

⇒ v = 0 m/s

The final velocity is hence <u>0</u><u> </u><u>m</u><u>/</u><u>s</u><u>.</u>

<h3>Note:</h3>

  • While solving questions of under gravity motions using equations of motion, remember the sign convection to avoid mistakes.
  • You can consider positive above the ground and negative for towards it.
You might be interested in
What would be the answer for this and how?
Veronika [31]

Answer:

B. 6 cm

Explanation:

First, we calculate the spring constant of a single spring:

k = \frac{F}{\Delta x}\\

where,

k = spring constant of single spring = ?

F = Force Applied = 10 N

Δx = extension = 4 cm = 0.04 m

Therefore,

k = \frac{10\ N}{0.04\ m}\\k =  250\ N/m\\

Now, the equivalent resistance of two springs connected in parallel, as shown in the diagram, will be:

k_{eq} = k + k\\k_{eq} = 2k = 2(250\ N/m)\\k_{eq} = 500\ N/m\\

For a load of 30 N, applying Hooke's Law:

\Delta x = \frac{F}{k_{eq}}\\\\\Delta x = \frac{30\ N}{500\ N/m}\\\\\Delta x = 0.06\ m = 6\ cm\\

Hence, the correct option is:

<u>B. 6 cm</u>

7 0
2 years ago
John walks 1.00 km north, then turns right and walks 1.00 km east. His speed is 1.50 m/s during the entire stroll.a) What is the
avanturin [10]

Answer:

(a) 1.414 km

(b) 1.06 m/s

Explanation:

(a) For John:

Distance = 1 km north and then 1 km east

Speed = 1.5 m/s

total distance traveled = 1 + 1 = 2 km = 2000 m

Time taken to travel = Distance / speed

t = 2000 / 1.5 = 1333.3 seconds

Displacement = \sqrt{1^{2}+1^{2}}=1.414 km

(b) For jane :

Time is same as john = 1333.33 second

Distance = 1.414 km = 1414 m

Speed = distance / time = 1414 / 1333.33 = 1.06 m/s

3 0
3 years ago
What is the difference between heat and temperature
Tasya [4]
Temperature is the measurement system we use to measure the heat
7 0
3 years ago
Which of the following is an example of a noninfectious disease?
Scorpion4ik [409]
D lung cancer is not infectious
3 0
3 years ago
Read 2 more answers
How many dots should be drawn in the lewis dot structure for an atom of sodium A)19 B)8 C)4 D)1
Stells [14]
Na is in the first column on the periodic table so therefore it would have 1 valence electron
D 1
6 0
3 years ago
Other questions:
  • Comets travel in orbits around the Sun. Some comets take less than 200 years to orbit the Sun. They are called short-period come
    15·2 answers
  • Gravitational force is a(n)? A) attractive force B) repulsive force C) both an attractive and repulsive force D) neither an attr
    10·1 answer
  • Rooted plants are most likely found in which aquatic zone?
    11·1 answer
  • Hurricanes are formed due to
    14·2 answers
  • Best Answer will receive BRAINLIEST One consequence of Newton's third law of motion is that __________. A. every object that has
    15·2 answers
  • An evacuated tube uses an accelerating voltage of 55 kV to accelerate electrons to hit a copper plate and produce x rays. Non-re
    12·1 answer
  • I'll mark brainliest
    12·1 answer
  • An object with a momentum of 1600 kg m/s slows down and its new momentum is 900 kg m/s. What is the magnitude of the impulse tha
    6·1 answer
  • Describe the forces that act on a skydiver before
    11·1 answer
  • Amy uses 20 N of force to push a lawnmower 10 meters. How much work does she do?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!