Lisa is initially traveling in the positive direction at 10 m/s, and has an acceleration of -2 m/s^2.
a.What is her velocity after 20 s?
b.What is her displacement?
c.What distance did she cover? (Tricky! Imagine her motion on a motion map. It is not equal to the displacement.)
Lisa is initially traveling in the positive direction at 10 m/s, and has an acceleration of...
An object is initially traveling in the +x direction at 15 m/s. A constant acceleration of 6.7 m/s2 is applied in the -x direction. What is the displacement it travels, in meters, before it stops? If in the negative x direction, indicate so with a negative sign.
A car is initially moving at 9.9 m/s in the positive x direction and accelerates at a constant acceleration of 3.4 m/s2 in the positive x direction for 6 seconds. It then immediately has an acceleration of 6.6 m/s2 in the negative x direction. After some time, its velocity is 27.6 m/s in the negative x direction. What is the average velocity for the entire trip in m/s? Indicate the negative x direction by including a negative sign but do...
A car initially traveling at 29.8 m/s undergoes a constant negative acceleration of magnitude 1.60 m after its brakes are applied (a) How many revolutions does each tre male before the comes to a stop, assuming the car does not sad and the tires have made of 0.330 ? (6) What is the angular speed of the wheels when the car has traveled half the total distance? Need Help? The 4 -14 points SerCP8 7.P.012, My Notes Ask Your Teacher...
A 988 kg car traveling initially with a speed of 35 m/s in an easterly direction crashes into the rear end of a 9350 kg truck moving in the same direction at 11.6 m/s. The velocity of the car right after the collision is 15.4 m/s to the east. 35 m/s 15.4 m/s 11.6 m/s MO What is the velocity of the truck immedi- ately after the collision? Answer in units of m/s. part 2 of 2 How much mechanical...
11. A car initially traveling at 29.0 m/s undergoes a con- ostant negative acceleration of magnitude 1.75 m/s after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires have radii of 0.330 m? (b) What is the angular speed of the wheels when the car has traveled half the total distance? LILAA OI n JO 21. A 55.0-kg ice skater is...
A 1100 kg car traveling initially with a speed of 26.00 m/s in an easterly direction crashes into the back of a 9 450 kg truck moving in the same direction at 20.0 m/s. The velocity of the car right after the collision is 18.0 m/s to the east. (a) What is the velocity and direction of the truck right after the collision? (Give your answer to at least four significant figures.) (b) What is the change in mechanical energy...
A 1,245-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,200-kg truck moving in the same direction at 20.0 m/s (see figure below). The velocity of the car right after the collision is 18.0 m/s to the east. (a) What is the velocity of the truck right after the collision? __________ m/s (east) (b) How much mechanical energy is lost in the collision? __________ J
A proton, initially traveling in the +x-direction with a speed of 5.15×105 m/s , enters a uniform electric field directed vertically upward. After traveling in this field for 3.96×10−7 s , the proton’s velocity is directed 45 ∘ above the +x-axis. Part A What is the strength of the electric field?
a 1200kg car traveling initially qith a speeed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,000kg truck moving in the same direction at 20.0 m/s. the velocity of the car right after the collision is 18.0 m/s to the east. what is the celocity of the truck right after the collision?
A 1,190-kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear end of a 9,700-kg truck moving in the same direction at 20.0 m/s (see figure below). The velocity of the car right after the collision is 18.0 m/s to the east. +25.0 m/s +20.0 m/s +18.0 m/s v Before After (a) What is the velocity of the truck right after the collision? (Round your answer to at least three decimal places.)...