v=u+ at
u=2
a=-5
t=1/2
Work out the value of v
Hi im really confused about this question please can someone help me. Thanks x
???
You are given:
v=u+ at
u=2
a=-5
t=1/2
then v = 2 + (-5)(1/2)
= ......
Thanks i managed to figure it out the answer is v=-0.5. Thanks so much for the help x
Sure, I can help you with that! The equation you provided is the equation of motion, which relates the final velocity (v) of an object to its initial velocity (u), acceleration (a), and time (t).
To find the value of v, you will substitute the given values of u, a, and t into the equation.
Given:
u = 2 (initial velocity)
a = -5 (acceleration)
t = 1/2 (time)
Now we will substitute these values into the equation:
v = u + at
v = 2 + (-5) * (1/2)
First, we multiply the acceleration (-5) by the time (1/2):
v = 2 + (-5/2)
Next, we add the product (-5/2) to the initial velocity (2):
v = 2 - 5/2
To perform the subtraction, we need to have a common denominator for 2 and 5/2. The common denominator is 2:
v = 4/2 - 5/2
Now we subtract the numerators and keep the common denominator:
v = (4 - 5)/2
v = -1/2
Therefore, the value of v is -1/2.