Answer:
Step-by-step explanation:
Let v be the speed after the collision of both the cars.
Now, momentum is given by: mass × velocity, then by equating the total momentum before and after the collision of the two cars, we get
⇒
⇒
⇒
Thus, they are moving at the velocity of
Answer:
8 calculators at most.
Step-by-step explanation:
Let x represent number of calculators.
We have been given that each calculator costs $15. So the cost of x calculators would be dollars.
Since the order must be less than $125 in order to not go over budget, so cost of x calculators should be less than or equal to 125. We can represent this information in an inequality as:
Therefore, our required inequality would be .
Let us divide both sides of inequality by 15 as:
Since we cannot order 0.33 of a calculator, therefore, the math club can order 8 calculators at most.