A bolt is dropped from a bridge under construction, falling 82 m to the valley below the bridge. (a) How much time does it take to pas through the last 14% of its fall? What is its speed (b) when it begins that last 14 % of its fall and (c) just before it reaches the ground? (a) Number i (b) Number 37.178 (c) Number 40.09 ! Unit Unit Unit S m/s m/s

The acceleration of an object due to air resistance is a = -bư/m, where v is the %3D speed of the object and m is its mass. What are the SI units of b? O kg/s O kg/s? O kg/m kg/m? O kg - m/s? none of these

Your answer is partially correct. A bolt is dropped from a bridge under construction, falling 82 m to the valley below the bridge. (a) How much time does it take to pass through the last 14% of its fall? What is its speed (b) when it begins that last 14% of its fall and (c) just before it reaches the ground? (a) Number i (b) Number 37.178 (c) Number 40.09 eTextbook and Media Hint GO Tutorial Unit Unit Unit S m/s m/s

2 Dante plays basketball. After 3 games, he had scored 25 points and after 7 games he had scored 60 points. If Dante continues to score points at this pace, what is a reasonable projection for his total points scored after 24 games? F 115 points G 180 points H 204 points J 260 points

You are a police officer examining the scene of a car crash that claimed the life of someone driving a Tesla. There was a collision involving them and a pickup truck. The truck driver, who survived, said he was travelling North into the intersection and the Tesla was travelling East into the intersection. The truck driver claims that he was not exceeding the speed limit when the accident occurred. You note the posted speed limit was 80 km/h. Like airplanes, Teslas have a black box that records various statistics in the event a collision occurs. After analyzing the data from the black box, you discover the Tesla was driving at a velocity of 69.6 km/h [E] when the collision occurred. You google the mass of both of the vehicles and find the Tesla should be about 2020 kg and the truck should be about 2820 kg. During the collision, the two vehicles crumpled and became entangled, the skid marks revealing that the two vehicles travelled E 68° N after impact. How fast, in km/h, was the truck…

Here are three vectors in meters: d1 = -6.60î + 8.70ĵ + 3.50k d 2 = - 2.00î – 4.00ĵ + 2.00k d 3 = 2.00î + 3.00ĵ + 1.00k What results from (a) đ1· ( đ 2 + đ 3 ), (b) đ 1 · ( đ 2 × đ 3), and d 1 x ( d 2 + d 3 ) (c), (d) and (e) for i,j and k components respectively)? (a) Number i Units (b) Number Units (c) Number i Units (d) Number Units (e) Number i Units

The mass of an ear ring is 950 mg. Express this mass in Sl unit. 1. (a) 9.50 x 106 kg (b) 9.50 x 104 kg (c) 9.50 x 103 g (d) 9.50 x 101 g A 16 g steel ball and a 10 g nylon ball are dropped from the same height at the same time. As the ball 2. reaches the ground, which of the following quantity is not the same for both the balls? |(a) Displacement (b) Velocity (c) Acceleration (d) Weight. A boy pulls a table to the left with a force of 25 N. A second boy pulls the same table to the right with 3. a force of 15 N. What is the resultant force acting on the table? (a) 10 N right (b) 10 N left (c) 40 N right (d) 40 N left A driver accelerates his car and raises its speed from 40 km/h to 80 km/h. The kinetic energy of the 4. car becomes; (a) 2 times (b) 4 times (c) half (d) same The diameter of an optical fiber is 6.0 nm. Its radius in m is 5. (a) 12.0 x 106 m (b) 12.0 x 10° m (c) 3.0 x 106 m (d) 3.0 x 10° m. A swimmer completes the first 50 m of the 100-m free style in 37.8 s. On reaching…

You go watch your friend as she runs at a cross country meet. The first time she passes you, your friend runs by going due north at a speed of 4.40 m/s. You move to a different place on the course and twelve minutes after you saw her the first time, your friend runs past you again. This time she is traveling at a speed of 3.80 m/s in the direction 30.0◦ W of S. What is the direction of her average acceleration between those same two times?

The scalar product A · B of the two vectors A = 2i + 3j and B =i- 2j is O -4 k O 2i - 6j -4

An object's velocity as a function of time in one dimension is given by the expression; v(t) =  3.8t + 6.68 where are constants have proper SI Units. At what time is the object's velocity 61.2 m/s?