Answer:
dream car
Explanation:
because i dont mind paying taxes and i wouldnt want to live in a van
Answer:
Kinetic energy increases and potential energy decrease when velocity of an object increase.
Passenger
r = 96 km/hr
t = t - 2
Freight
r = 64
t = t You have to solve for t before you can solve for d
The distance is the same for both trains.
Formula
r_passenger_train * time_passenger = r_freight_train * time_freight
Solve
96 km/hr * (t - 2) = 64*t the easiest way to go on is to divide by 96
(t - 2) = 64t/96
t - 2 = 0.667t Subtract 0.667t from both sides.
t - 0.667t - 2 = 0 Add 2 to both sides. combine the two times
0.333t = 2 Divide by 0.333
t = 2/0.333 = 6 hours
Answer
Now solve for the distance.
d_ passenger = r_passenger * t_passenger
d_passenger = ???
r_ passenger = 96
t = 6 - 2 = 4 hours.
d = 96 * 4
d = 384 km.
Answer:
Friction = 15.80 Newton
Explanation:
given
A pulling force (F) is 70N acting on the block of 10kg (M) which is placed on the ramp which is at an angle of 20° with the horizontal.
Irrespective to the ramp ,Weight of the body acts vertically downward , if we resolve the components of W=Mg as Mgsin20° (along the ramp) and Mgcos20° (perpendicular to the ramp) as shown in the attachment which contains FBD of the block
as given the body is Accelerating with an acceleration (a) of 2 m/ due to the pulling force . As friction always opposes the motion it acts in the backward direction to the pulling force .as shown in the figure attached
By Newton's 2nd Law
Ma = F - MgSin20°-friction
by subtituting the values we get
10(2) = 70 - 10(10)sin20° - friction
friction =70 - 100sin20° -20
friciton = 15.7979N
by rounding of ,
Frictional force is 15.80 Newton
Answer:
changing the direction in which a force is exerted