John carried out an experiment to find out how different surfaces P- Q- R and S affect the braking efficiency of a car traveling at 50 km - h- The results are shown below-lbeginarray c c c c c Type of road surfaces -P-Q-R-SStopping distance - 18 - m - 15 - m - 19 - m - 27 - m lend array Which type of road will provide the greatest frictional force for the car to stop-A- PB- RC- QD- S

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Nature of Surfaces in Contact

John carried ...

Question

John carried out an experiment to find out how different surfaces (P, Q, R and S) affect the braking efficiency of a car traveling at $50 k m / h$ . The results are shown below.
$\begin{matrix} Type of road surfaces & P & Q & R & S Stopping distance & 18 m & 15 m & 19 m & 27 m \end{matrix}$
Which type of road will provide the greatest frictional force for the car to stop?

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
Q

In the question, we have been given the distances that the vehicle takes to come to rest for the surfaces P, Q, R and S.
Greater the frictional force, less is the distance required to come to rest. Of the surfaces, Q is the one where the vehicle covers the least distance before coming to rest. Hence, Q offers the maximum force of friction.

Suggest Corrections

Similar questions

John carried out an experiment to find out how different surfaces (P, Q, R and S) affect the distance a car travelling at 50 km/h needed to stop once the brakes are applied. The results are shown below.
$\begin{matrix} T y p e o f r o a d s u r f a c e s & P & Q & R & S S t o p p i n g d i s t a n c e & 18 & 15 & 19 & 27 \end{matrix}$
Which type of road will provide the most friction for the car to stop ?

Q. John carried out an experiment to find out how different road surfaces (P, Q, R and S) affect the stopping distance of a car travelling at 50 km/h. The result is tabulated below.

\begin{matrix} Type of road surface & P & Q & R & S Stopping distance (m) & 18 & 15 & 19 & 27 \end{matrix}

Which surface provides maximum frictional force?

Q. John carried out an experiment to find out how different road surfaces (P, Q, R and S) affect the stopping distance of a car travelling at 50 km/h. The result is tabulated below.

\begin{matrix} Type of road surface & P & Q & R & S Stopping distance (m) & 18 & 15 & 19 & 27 \end{matrix}

Which surface provides maximum frictional force?

Q. Harry carried out an experiment to find out how different surfaces (A, B, C and D) affect the distance of a car travelling at 50 km/h needed to stop once the brakes applied. The results are shown below in given table. Which type of road will provide the most friction for the car to stop?

हैरी यह ज्ञात करने के लिए एक प्रयोग करता है, कि भिन्न-भिन्न पृष्ठ (A, B, C तथा D) 50 km/h से गतिशील एक कार को ब्रेक लगाकर रोकने के लिए आवश्यक दूरी को किस प्रकार प्रभावित करते हैं। परिणाम नीचे दी गई सारणी में दर्शाए गए हैं तथा किस प्रकार की सड़क कार के रूकने के लिए सर्वाधिक घर्षण प्रदान करेगी?

Types of road surface (सड़क के पृष्ठ के प्रकार)	Stopping distance (m) (रूकने की दूरी (m))
A	18
B	25
C	19
D	17

‘ l^{'}

and ‘m’ are respectively azimuthal and magnetic quantum numbers.

\begin{matrix} Column-I & Column-II (a) & Number of values of^{'} l^{'} for an energy level & (p) & 0, 1, 2..... (n - 1) (b) & Actual values of^{'} l^{'} for a particular type of & (q) & + ‘ l^{'} to - ‘ l^{'} through zero orbital (c) & Number of values of 'm' for^{'} l^{'} = 2 & (r) & 5 (d) & Actual values of 'm' for a particular type of & (s) & n orbital \end{matrix}

Join BYJU'S Learning Program