A car has uniform velocity of 108km/hour. How far does it travel in 1 1/2 minutes
1 answer:
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Answer:
Yes
Explanation:
The velocity measured by Jennifer and Johnny is
The actual velocity is
We can calculate the % error of the students measurement as follows:
Which is lower than the 2.5% maximum error required, so the two students will pass the test.
Answer:
11m/s
Explanation:
Given parameters:
Mass of the lead shot = 8kg
Energy of the shot = 484J
Unknown:
Velocity of the shot = ?
Solution:
To solve this problem, we apply the kinetic energy formula;
K.E = m v²
m is the mass
v is the unknown
Now, insert the parameters and solve;
484 = x 8 x v²
484 = 4v²
v² = 121
v = 11m/s