What is the acceleration of this object? The object's mass is 2 kg. 11 m/s2 4 m/s2 0 m/s2 7 m/s2
1 answer:
Answer:
The acceleration of the object is 4
Step-by-step explanation:
Given:
The mass of the object is = 2 kg
To Find:
Acceleration of the object = ?
Solution:
From the diagram below we know that
The resultant force is 8N along the east Direction
we know the acceleration is the"Rate of change of Velocity"
And Expressed as
F = ma
Where
F is the Force
m is the mass
Now substituting the known values we get
a=4
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‣ A coin is tossed three times.
‣ The probability of getting,
1) Exactly 3 tails
2) At most 2 heads
3) At least 2 tails
4) Exactly 2 heads
5) Exactly 3 heads
★ When three coins are tossed,
then the sample space = {HHH, HHT, THH, TTH, HTH, HTT, THT, TTT}
[here H denotes head and T denotes tail]
⇒Total number of outcomes = 8
<u>1) Exactly 3 tails </u>
Here
• Favourable outcomes = {HHH} = 1
• Total outcomes = 8
<u>2) At most 2 heads</u>
[It means there can be two or one or no heads]
Here
• Favourable outcomes = {HHT, THH, HTH, TTH, HTT, THT, TTT} = 7
• Total outcomes = 8
<u>3) At least 2 tails </u>
[It means there can be two or more tails]
Here
• Favourable outcomes = {TTH, TTT, HTT, THT} = 4
• Total outcomes = 8
<u>4) Exactly 2 heads </u>
Here
• Favourable outcomes = {HTH, THH, HHT } = 3
• Total outcomes = 8
<u>5) Exactly 3 heads</u>
Here
• Favourable outcomes = {HHH} = 1
• Total outcomes = 8