Twelve is at most a number decreased by 7
2 answers:
Answer:
Step-by-step explanation:
To solve this problem, we need to express the statement as a math expression.
"At most" expresses a maximum value which can be written using the relation , which represents a restriction for maximum values.
"A number" refers to a general value that could be express as a variable .
"decreased by" indicates a difference or subtraction.
Having present all this, we can write the expression as
In words, TWELVE is AT MOST a NUMBER DECREASED BY 7.
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Answer:
<em>The ball's speed will be 10 m/s at t=1.22 seconds</em>
Step-by-step explanation:
The vertical motion of an object is controlled by the force of gravity. This means that there is a non-zero net force acting on the object that makes it accelerate downwards.
If the object is thrown upwards at speed vo, its speed at time t is:
Where g is the acceleration of gravity
Our ball is thrown upwards with v0=22 m/s. We need to calculate the time when its speed is vf=10 m/s.
Solving the above equation for t:
Substituting:
t=1.22 seconds
The ball's speed will be 10 m/s at t=1.22 seconds