Position (mi) 20 10 0 0 20 40 Time (min) 60 The figure shows a position versus time graph of Sylvia's trip to work. What is Sylvia's instantaneous velocity 60 min into the trip? (mph)
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- A frustrated office worker throws his laptop out of his business's high- rise office building. The height, h, in meters of the laptop above the ground at t seconds can be modelled by h(t) = 125-5t². a. Determine the average rate of change between the third and fourth second of the laptop's flight. b. Estimate the rate at which the laptop hits the ground.An object is dropped from a tower, 160ft above the ground. The object's height above ground t sec into the fall is s=160−16t^2. a. What is the object's velocity, speed, and acceleration at time t? b. About how long does it take the object to hit the ground? c. What is the object's velocity at the moment of impact?An object is dropped from a tower, 200 ft above the ground. Theobject's height above ground t sec into the fall is s=200−16t^2. a. What is the object's velocity, speed, and acceleration at time t? b. About how long does it take the object to hit the ground? c. What is the object's velocity at the moment of impact?
- If an object is dropped from a 196-foot-high building, its position (in feet above the ground) is given by s(t)= - 16t² + 196, where t is the time in seconds since it was dropped. a. What is its velocity 1 second after being dropped? b. When will it hit the ground? c. What is its velocity upon impact?A small rock is thrown vertically upward with a speed of 29.0 m/s from the edge of the roof of a 33.0 m tall building. The rock doesn't hit the building on its way back down and lands in the street below. Ignore air resistance. A) Whats the speed of the rock just before it hits the street B) How much time elapses from when the rock is thrown until it hits the streetAn object is dropped from a tower, 153 ft above the ground. The object's height above ground t sec into the fall is s = 153 - 16t2. a. What is the object's velocity, speed, and acceleration at time t? b. About how long does it take the object to hit the ground? c. What is the object's velocity at the moment of impact? The object's velocity at time t is The object's speed at time t is ft / sec. The object's acceleration at time t is | ft/ sec2. (Simplify your answer.) It takes |sec for the object to hit the ground. (Round to the nearest tenth.) The object's velocity at the moment of impact is ft / sec. (Round to the nearest tenth.)
- An object is dropped from a tower, 171 ft above the ground. The object's height above ground t sec into the fall is s=171-16t2². a. What is the object's velocity, speed, and acceleration at time t? b. About how long does it take the object to hit the ground? c. What is the object's velocity at the moment of impact? The object's velocity at time t is The object's speed at time t is The object's acceleration at time t is ft/sec² (Simplify your answer.) ft/sec. It takes sec for the object to hit the ground. (Round to the nearest tenth.) The object's velocity at the moment of impact is (Round to the nearest tenth.) ft/sec. (101. An object is launched with an initial velocity of 96 ft/sec. The height of the object, h, in feet at time, t seconds is given by h = -16t² + 96t. a. From what height is the object launched? b. How high is the object after 3 seconds? c. When does the object reach a height of 128 feet? d. When does the object hit the ground?A stone is thrown straight up from the edge of a roof, 950 feet above the ground, at a speed of 10 feet per second. A. Remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 3 seconds later? 836 B. At what time does the stone hit the ground? -7.4 C. What is the velocity of the stone when it hits the ground? 70.24 ft syntax incomplete. US esc Cc & 6 7 081 5 %# 3
- An object is dropped from a tower, 157 ft above the ground. The object's height above ground t sec into the fall is s = 157- 16t. a. What is the object's velocity, speed, and acceleration at time t? b. About how long does it take the object to hit the ground? c. What is the object's velocity at the moment of impact? The object's velocity at time t is.Physics 30S Science & Technology 2240 Grant Ave. Winnipeg. MB R2C IL6 Shaflesbury High School Motion: Speed/Velocity & Acceleration Ad V = At a = Average Velocity, 1. A man jogs 5.0 km (5000 m) in 27 minutes. a) What is the time interval (At) in seconds? b) Calculate his average speed in metres per second (m/s). Average Acceleration, At 2. An object has a position of 13 metres west. 5.0 seconds later it's at 7 metres east. a) What was the initial position? b) What was the change of position or displacement (Ad)? c) What was the average velocity? 3. A world class sprinter runs 100.0 m in 8.90 s. What was his average speed? 4. A hiker gets lost in a forest. He walks half-way around a circle with a radius of 2.1 km in 2.0 hours. a) What distance did he walk? b) What was his average speed? c) What was his displacement? d) What was his average velocity? WE S C-2rr 5. A car has an average highway speed of 90 km/h or 25 m/s. At this speed; how long will it take to drive to Kenora which is 190…LC Below is a position graph of an object. What is the instantaneous velocity of the object at e = 3.5 s. x (m) レョA At 20- A. v = 40 m/s B. v = -10 m/s C. v = -20 m/s D. v = 10 m/s 10 0. 0. t(s) 4 1 3.