Answer:

Explanation:
The power supplied by the engine is given by
P = Fv
where
F is the force applied
v is the velocity of the car
Here we have
P = 3700 W
v = 14.2 m/s
So we can solve the equation to find the average force:

The net force applied on the car is also equal to
F = ma
where
m = 960.0 kg is the mass of the car
a is the acceleration
Re-arranging the equation, we find the acceleration:

Answer:
(a) 4.75 m/s² (b) 7.6 N
Explanation:
Given that,
The mass of a lab cart, m = 1.6 kg
Initial speed, u = 0.5 m/s
Final speed, v = 4.3 m/s
Time, t = 0.8 s
(a) The acceleration of an object is equal to the rate of change of velocity. It can be calculated as :

(b) Let F be the net force on the cart. It can be given by :
F = ma

Hence, this is the required solution.
Answer : Helped understand why the mass of each element was what it was.
Explanation: In other words, the discovery of the neutron helped people understand why a certain element had the mass it did. This is because the number of protons plus the number of neutrons equals the mass of an element, which wasn’t known until the discovery of the neutron.
Answer:1.44 s,10.17 m
Explanation:
Given
two balls are separated by a distance of 41.1 m
One person drops the ball from a height of 41.1 and another launches a ball with velocity of 41.1 m exactly at the same time.
Let the ball launches from ground travels a distance of x m in t sec
For Person on window


For person at ground

add (1) & (2)


and
is given by


Substitute value of t in equation 1

41.1-x=10.171 m
Thus the two ball meet at distance of 10.17 m below the window.