Explanation:
In 1897, J.J. ... Thomson realized that the accepted model of an atom did not account for negatively or positively charged particles. Therefore, he proposed a model of the atom which he likened to plum pudding. The negative electrons represented the raisins in the pudding and the dough contained the positive charge.
Answer: The final Velocity, V, of the car is 7.9m/s
Explanation:
Given the following :
Toy car starts from rest, therefore,
Initial Velocity (u) = 0
Acceleration (a) = 1.5m/s^2 E for time, t = 5.25s
Final velocity (V) of the car =?
Using the motion equation:
v = u + at
Where v = final Velocity
u = Initial Velocity
a = acceleration
t = time
v = 0 + 1.5(5.25)
v = 0 + 7.875
v = 7.875m/s
v = 7.9m/s
Answer:
6.39 meters
Explanation:
t=sqrt(2d/g)
convert cm to m...... t=sqrt(2*0.73/9.81)...... t=0.1488 seconds
v=d/t...... v=0.70/0.1488....... v=4.7m/s
Now, the new time out the window is t=sqrt(2*6.68/9.81)..... t=1.36 seconds
d=vt....... d=(4.7)*(1.36)...... d=6.39 meters!
Answer:
our acceleration is 0 because there is a constant speed..
a = final speed - initial speed / time
final speed = initial speed ( since speed is constant)
therefore acceleration is 0
