DATA The table gives automobile performance data for a few types of cars: Make and Model (Year) Mass (kg) Time (s) to go from 0 to 60 mph Alpha Romeo 4C (2013) 895 4.4 Honda Civic 2.0i (2011) 1320 6.4 Ferrari F430 (2004) 1435 3.9 Ford Focus RS500 (2010) 1468 5.4 Volvo S60 (2013) 1650 7.2 *Source: www.autosnoui.com (a) During an acceleration of 0 to 60 mph. which car has the largest average net force acting on it? The smallest? (b) During this acceleration, for which car would the average net force on a 72.0-kg passenger be the largest? The smallest? (c) When the Ferrari F430 accelerates from 0 to 100 mph in 8.6 s. what is the average net force acting on it? How does this net force compare with the average net force during the acceleration from 0 to 60 mph? Explain why these average net forces might differ. (d) Discuss why a car has a top speed. What is the net force on the Ferrari F430 when it is traveling at its top speed, 196 mph?
DATA The table gives automobile performance data for a few types of cars: Make and Model (Year) Mass (kg) Time (s) to go from 0 to 60 mph Alpha Romeo 4C (2013) 895 4.4 Honda Civic 2.0i (2011) 1320 6.4 Ferrari F430 (2004) 1435 3.9 Ford Focus RS500 (2010) 1468 5.4 Volvo S60 (2013) 1650 7.2 *Source: www.autosnoui.com (a) During an acceleration of 0 to 60 mph. which car has the largest average net force acting on it? The smallest? (b) During this acceleration, for which car would the average net force on a 72.0-kg passenger be the largest? The smallest? (c) When the Ferrari F430 accelerates from 0 to 100 mph in 8.6 s. what is the average net force acting on it? How does this net force compare with the average net force during the acceleration from 0 to 60 mph? Explain why these average net forces might differ. (d) Discuss why a car has a top speed. What is the net force on the Ferrari F430 when it is traveling at its top speed, 196 mph?
DATA The table gives automobile performance data for a few types of cars:
Make and Model (Year)
Mass (kg)
Time (s) to go from 0 to 60 mph
Alpha Romeo 4C (2013)
895
4.4
Honda Civic 2.0i (2011)
1320
6.4
Ferrari F430 (2004)
1435
3.9
Ford Focus RS500 (2010)
1468
5.4
Volvo S60 (2013)
1650
7.2
*Source: www.autosnoui.com
(a) During an acceleration of 0 to 60 mph. which car has the largest average net force acting on it? The smallest? (b) During this acceleration, for which car would the average net force on a 72.0-kg passenger be the largest? The smallest? (c) When the Ferrari F430 accelerates from 0 to 100 mph in 8.6 s. what is the average net force acting on it? How does this net force compare with the average net force during the acceleration from 0 to 60 mph? Explain why these average net forces might differ. (d) Discuss why a car has a top speed. What is the net force on the Ferrari F430 when it is traveling at its top speed, 196 mph?
A skater is trying to perform a jump. her vertical take-off speed is 1.7 m/s. How high
is her jump?
Assuming g=9.8 m/s²
Your Answer:
Answer
units
400-
350-
€ 300-
250-
200-
distance
travelled, y
150-
100-
50-
0-
10
20
70
80
40 50
time (seconds)
Fig. 9.1 Distance-time graph for a cycle ride.
The total distance travelled is
m
m/s. (answer with one decimal place)
The distance travelled when t = 30 s is
The speed between 0 and 30s is
The speed between 50s and 70s is
Average speed for the entire journey is
m/s.
distance travelled (m)
speed=
30
time taken, x
60
m/s. (answer with one decimal place)
A steel cable lying flat on the floor drags a 20 kg block across a horizontal, frictionless
floor. A 110 N force applied to the cable causes the block to reach a speed of 3.9 m/s in a
distance of 2.0 m.
What is the mass of the cable?
Express your answer with the appropriate units.
m=
Submit
μA
Value
Units
?
Units input for part A
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